Provisional WCMA 100 1 Publication 美国窗帘安全标准

ANSI/WCMA A100.1-2009 (PS)Revision of ANSI/WCMA A100.1-2007PROVISIONAL AMERICAN NATIONAL STANDARDFOR SAFETY OFCORDED WINDOW COVERING PRODUCTSSPONSORWINDOW COVERING MANUFACTURERS ASSOCIATION, INC. This standard was approved February 27, 2009 under the procedures for the publication for a Provisional Standard in the ANSI Essential Requirements Annex B. Changes relate to requirements for Roman Shades in paragraphs 3.1, 3.2, 4.5, 5.2.8, and are shown in red withinthis standard.AMERICAN NATIONAL STANDARDSome of the information contained in this document has been processed in accordance with ANSI’s requirements for a Provisional American National Standard. The same or similar document will undergo the standards development process set forth in the WCMA’s accredited procedures. This Provisional ANS shall be withdrawn on or before the two year anniversary date of its approval as such.Published byWindow Covering Manufacturers Association, Inc.355 Lexington Avenue, New York, New York, 10017Copyright © 2009 by the Window Covering ManufacturersAssociation, Inc.Not to be reproduced withoutSpecific authorization from WCMAPrinted in the USAThis Standard was developed by the Window Covering Manufacturers Association, Inc.FOREWORDWCMA standards, of which the document contained herein is one, are developed through a consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied viewpoints and interests to achieve consensus around window covering products and safety issues. While the WCMA administers the process and establishes rules to promote fairness in the development of consensus, it does not independently test, evaluate, or verify the accuracy of any information or the soundness of any judgments contained in any such standards.The WCMA disclaims liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this document. The WCMA also makes no guaranty or warranty as to the accuracy or completeness of any information published herein.In issuing and making this document available, the WCMA is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is the WCMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances.The WCMA has no power, nor does it undertake, to police or enforce compliance with the contents of this document. Nor does the WCMA list, certify, test or inspect products, designs, or installations for compliance with this document. Any certification or other statement of compliance with the requirements of this document shall not be attributable to the WCMA and is solely the responsibility of the certifier or maker of such statement.TABLE OF CONTENTS1.SCOPE (5)2. GENERAL (5)3.DEFINITIONS (5)4.PRODUCT REQUIREMENTS (7)5. LABELING AND OPERATIONAL TAG REQUIREMENTS (8)6. TESTS AND PARAMETERS (16)A1.3.4.4.3.4.3 - 2 CORDS (21)A1.3.4.4.3.4.4 - 3 CORDS (22)A1.3.4.4.3.4.5 - 4 CORDS (23)Figure A-1 Test Fixture Construction (27)APPENDIX C: GLOSSARY (NOT PART OF WCMA 100.1) (29)1. SCOPE1.1 The members of the Window Covering Manufacturers Association, Inc. (WCMA), recognizing that unfortunate accidents, including strangulation, have occurred among young children using certain products having flexible loops made or imported by members of the industry, have prepared this Standard in cooperation with the U.S. Consumer Product Safety Commission (CPSC).WCMA members have been engaged in an extensive awareness program and have also furnished millions of devices to be used in a retrofit manner to reduce the chance of user injury.This Standard is not intended to inhibit, but rather to encourage the development of devices and methods that shall further improve the safety of products manufactured by industry members. Manufacturers and other users of this Standard are requested to submit suggestions for improvements to WCMA.Members of WCMA, in recognition of continuing improvements to be made, shall sponsor appropriate revisions to this Standard on a regular basis.1.2 This Standard applies to all interior drapery hardware and window covering products that incorporate bead chains, cords, or any type of flexible looped device in their operation. The items covered include the products listed in 1.3 when used in all reasonably foreseeable environments where young children are present.1.3 Products covered include Cellular Shades, Horizontal Blinds, Pleated Shades, Roll-Up Blinds, Roller Shades, Roman Shades, Traverse Rods, and Vertical Blinds. Stock and Custom Products. (See Section 3 for definitions of these terms.)2. GENERAL2.1 Objective The objective of this Standard is to provide requirements for covered products in 1.3 that reduce the possibility of injury, including strangulation, to young children from the bead chain, cord, or any type of flexible loop device used to operate the product.2.2 Values Required values given in this Standard are given in U.S. units. The SI (metric) equivalents are approximate.2.3 Tolerances Where only plus or minus values are given, they are permitted to be exceeded or reduced as appropriate at the option of the manufacturers. Linear dimensions expressed without specific tolerances or are not marked maximum or minimum shall be plus or minus 1/32 in. (1 mm).3. DEFINITIONS3.1 Accessible Cords Cords which are visually exposed from the front or back of the blind and can be easily reached and pulled to form a cord loop.3.2 Accessible Inner Cords Cords which are strung or threaded through blind members, which can be reached and pulled to form a cord loop.3.3 Bead Chain A series of small spheres, equally spaced on a cord or connected by metal shafts, and used to operate a window-covering product.3.4 Cellular Shades Includes those products referenced and commonly known as Honeycomb Shades. (Figure 2.) These products are manufactured using a number of natural and artificial materials, which include but are not limited to, fabric, and polyester film. Cellular shade substrates consist of multiple layers (referenced to as a single, double or triple cell construction) of material formed into tubes or cells in a horizontal orientation.3.5 Cord Connector A device used to join the ends of several individual cords and provide cord(s) for operation below the cord connector.3.6 Cord or Bead Loop A curving or doubling of a bead chain or cord so as to form a closed loop.3.7 Cord Release Device A device which releases a cord loop when subjected to a specified load.3.8 Cord Retraction Device A device with an inner winding feature. It is often attached to an exposed cord and gathers the cord(s) in its casing.3.9 Cord Shear A device that holds the loop plumb (like a cord weight) with an inner cutting mechanism. It is attached to an exposed cord loop which separates the cord(s) into two or more pieces when subject to a specified load.3.10 Cord Shroud Device A flexible tape or ribbon which houses the otherwise exposed cords.3.11 Free Standing Loop An inner cord loop that will not diminish in size when the force used to create the loop is removed from contact from the cord.3.12 Horizontal Blinds Includes those products referenced and commonly known as Microblinds, Miniblinds, and Venetian Blinds. Horizontal blinds consist of slats of various widths. Horizontal slats are manufactured using a number of natural and artificial materials, which include, but are not limited to, aluminum, fabric, polymers, steel, and wood. The slats are suspended from a headrail by “ladders,” which hold the slats in a horizontal orientation. The headrail houses mechanisms that allow ladders to be actuated to tilt the slats for maximum light control and privacy, or raised to stack against the headrail (Figure 1).3.13 Inner Cord That portion of an operating cord between the headrail and any moving rail that helps to suspend and lift the moving rail(s) and any horizontal louvers or fabric collected upon it at any position, raised or lowered.3.14 Inner Cord Stop Device A device to prevent the accessible inner cords from being pulled to createa cord loop.3.15 Multiple Cord or Bead Loop A curving or doubling of a bead chain or cord so as to form more than one closed loop.3.16 Multiple Cord Release Device A device which releases any one or more individual cords or bead loops when subject to a specified load.3.17 Operating Cord A form of rope, strap, or string used to operate a window covering product.3.18 Passive Device. A window-covering product component that operates without the direct interaction of the user, as opposed to an active device, which is activated and operated by the direct interaction of the user. 3.19 Permanent A marking or label shall be considered permanent if, during an attempt to manually remove it without the aid of tools or solvents, it cannot be removed, it tears, or it damages the surface to which it is attached.3.20 Pleated Shades Includes those products referenced and commonly known as Accordion, and Z-fold (Figure 3). These products are manufactured using a number of natural and artificial materials, which include, but are not limited to, fabric, polyester film, and paper products. Pleated shade substrates consist of single or multiple layers of material with permanent pleats in a horizontal orientation.3.21 Roll-Up Blinds Includes those products referenced and commonly known as Porch Shades, Roll-Up Shades, and Woven Woods. A window covering of a flexible sheet comprised of narrow strips of plastic or wood (in a horizontal orientation) woven together by cords. When the cord is pulled, a loop rises, causing the flexible sheet to roll-up from the bottom of the blind. (Figure 4).3.22 Roller Shade A window covering product comprised of a roller, a means of supporting the roller, and flexible sheets of material attached to the roller. The window covering operates by activating a spring mechanism in the roller or by a cord or bead loop attached to the roller (Figure 5&6).3.23 Roman Shades Includes those products referenced and commonly known as Austrian Shades, Balloon Shades, and Soft Shades. Roman Shades often consist of a flexible fabric with rings attached to the back. The rings are aligned in columns, and spaced so that the fabric folds or gathers as desired. The fabric issuspended from a headrail that contains hardware for guiding cords and operating the shade. Cords run from the headrail, through a column of rings, and are attached to the lowest ring. As the shade is raised, the fabric gathers from the bottom upwards towards the headrail (Figure 7).3.24 Sequential Process An operation that, to be completed successfully, requires two or more independent steps to be performed in a specific order.3.25 Stock Blinds Blinds that are made to standard sizes and then fitted by the consumer to varying sized windows.3.26 Tassel A device used to terminate and cover the end of a free hanging cord of a window covering product.3.27 Tension Device A device used to position cords in a manner to maintain tension on the cord loop.3.28 Traverse Rod A rod or track, which often uses cords to operate a pulley mechanism for drawing curtains, drapes or panels.3.29 Vertical Blinds Consist of slats or “vanes” in a vertical orientation that can be stacked in a small space to one or both sides of the headrail. Vertical vanes are manufactured in a number of natural and artificial materials, which include, but are not limited to, aluminum, fabric, glass, PVC, polymers, steel and wood. Vanes are suspended from a headrail by vane carriers. The headrail houses mechanisms that allow vane carriers to rotate and traverse the vanes (Figure 8).REQUIREMENTS4. PRODUCT4.1Exterior components of the blind which can be touched or ingested by young children shall be produced with no more than .02% lead by weight.4.2 Any safety component or device that is intended to separate from the product shall meet the requirements of Federal Standard: 16 CFR 1501 (see B1).4.3 The product shall reduce the hazard posed by an exposed operating cord or bead chain loop by meeting one or more of the following requirements:4.3.1 The product shall have no operating cords which are accessible.4.3.2 The product shall have one or more separate operating cords.4.3.3 The product shall contain a cord release device in the loop or the head rail that meets therequirements in 6.1.4.3.4 The product shall contain a permanently attached cord retraction device that meets therequirements in 6.2.4.3.5 The product shall contain a cord shear device that meets the requirements in 6.3.4.3.6 The product shall contain a cord shroud device that meets the requirements in 6.4.4.3.7 The product shall contain a cord tension device that meets the requirements in 6.5.4.3.8 The product shall, if it requires a cord connector, limit the exposed loop above the cordconnector to less than 3 inches (7 mm) below the bottom of the head rail when only the bottomrail is in the fully lowered position, and shall include a warning on the product that describes the potential hazard when the product is in the raised position.4.4 The product shall reduce the hazard posed by accessible inner cords by meeting one or more of the following requirements:4.4.1The product shall have no inner cords.4.4.2The product shall have inner cords that are not accessible4.4.3The product shall have accessible inner cords that meet the requirements in 6.6.4.4.3.1 For products that incorporate an inner cord stop device on the cord(s), the device(s) shall be positioned 6 in. (153 mm) or less below the head rail, when only the bottom rail is in the fully lowered position.4.5 In addition to meeting 4.4, the inner cords of Roman style shades shall meet one of the following requirements:4.5.1 They shall not be accessible.4.5.2 If they are accessible, they shall incorporate a cord release device that prevents a freestanding loop from forming4.5.3 If they are accessible and do not incorporate a cord release device, all the following shallapply:4.5.3.1 The vertical ring to ring (or cord guide to guide) spacing shall not be greater than8 in. (204 mm), and4.5.3.2 The cords on the side of the shade shall be 2 in. (51 mm) or greater from the edgeof the product, and4.5.3.3 The product shall include a bottom bar or hem of sufficient weight and rigidity toeliminate a free standing loop when the lift cord is pulled and released from any pointabove the first ring/guide above the tie-off point.5. LABELING AND OPERATIONAL TAG REQUIREMENTS5.1 Labeling Manufacturers shall provide, on all window covering products with cords that are accessible, warnings about the potential dangers of these products to young children. All warning labels and hang tags shall adhere to ANSI Z535 standards (B 1.1), and shall be provided in both English and Spanish. If a single long label containing both languages is used instead of two separate labels, only one set of pictograms is required.Generic Warning Bottom Rail Label(s) The signal word (“warning” in English and 5.1.1“advertencia” in Spanish) shall be in all uppercase letters measuring not less than 5/16" (8 mm) in height and preceded by an ANSI safety alert symbol (an equilateral triangle surrounding an exclamation point) of at least the same size. The rest of the warning message text shall be in both uppercase and lowercase letters (sentence capitalization), with capital letters measuring not less than 1/8 in. (3 mm) (English) or 3/32 in. (2 mm) (Spanish). The warning label shall also include a pictogram of a young child’s hand reaching for a blind cord, with a prohibition symbol (circle with a diagonal slash) covering the pictogram. The label shall be permanently affixed to all products with accessible cords. The label shall be placed on the bottom rail of the blind, and printed in a color that contrasts the bottom rail color. For products without bottom rails, the label shall be placed in an alternative location on the product, to be determined by the manufacturer or importer, that is visible to the consumers. The generic warning label(s) shall read as follows:5.1.1.1Generic Warning Bottom Rail Label for Narrow Product A warning label of reduced size may be used only on product less than 18" in. (457 mm) width where space limitations prevent the use of label(s) described in 5.1.1 The signal word (“warning” in English and “advertencia” in Spanish) shall be in all uppercase letters measuring not less than 5/32" (4 mm) and preceded by an ANSI safety alert symbol (an equilateral triangle surrounding an exclamation point) of at least the same size. The rest of the warning message text shall be in both uppercase and lowercase letters (sentence capitalization), with capital letters measuring not less than 1/16" (2 mm). The warning label shall also include a pictogram of a young child’s hand reaching for a blind cord, with a prohibition symbol (circle with a diagonal slash) covering the pictogram. The label shall be permanently affixed to all products with accessible cords. The label shall be placed on the bottom rail of the blind, and printed in a color that contrasts the bottom rail color. For products without bottom rails, the label shall be placed in an alternative location on the product, to be determined by the manufacturer or importer, that is visible to the consumers. The generic warning label(s) shall read as shown in 5.1.1.5.2 Operational Hang Tags The manufacturer shall provide an operational hang tag on the product. This tag shall include, at a minimum, all information presented in the following operational hang tags based on the characteristics of the product or the safety devices included on the product. The “Warning” word shall be typeset no less than 5/16" (8 mm) in capital letters and preceeded by the ANSI safety alert symbol (an equilateral triangle surrounding an exclamation point). The rest of the message is in upper and lower case with the capital letters not less than 1/8 in. (3 mm). A pictogram of a young child’s hand reaching a blind cord with the universal prohibition symbol (circle with diagonal slash) on top of the picture shall also be included on the hangtag. The hangtag(s) shall be used on all window covering products that have cords that are accessible.5.2.1 Individual Tassel Cords and Cord Release Device (Custom Blinds)Young children can STRANGLE in cord and bead chain loops. They can also wrap cords around their necks and STRANGLE.Always keep cords and bead chains out of children’s reach.Move cribs, playpens, and other furnitureaway from cords and bead chains.Children can climb furniture to get to Los niños pequeños corren el riesgo deESTRANGULARSE en los lazos de las cuerdas y cadenas. También se pueden envolver las cuerdasalrededor del cuello y ESTRANGULARSE.Mantenga siempre las cuerdas y cadenas fuera del alcance de los niños.Mueva las cunas, los corrales y otros muebles lejos de las cuerdas y cadenas. Los niñospueden subirse a los muebles para llegar a las cuerdas.5.2.1a Individual Tassel Cords and Cord Release Device (Stock Blinds)Young children can STRANGLE in cord and bead chain loops. They can also wrap cords around their necks and STRANGLE.Always ensure that inner cord stop devices are within 6" (153 mm) of headrail whenblind is in the fully lowered position. Seeadjustment instructions.Always keep cords and bead chains out ofchildren’s reach. Los niños pequeños corren el riesgo deESTRANGULARSE en los lazos de las cuerdas y cadenas. También se pueden envolver las cuerdasalrededor del cuello y ESTRANGULARSE.Siempre asegure que mechanismos de cuerdas interiores para parar esten dentro de 6”(153mm) de el riel superior cuando la persianaesta en el posición completamente bajado.Consultad los instrucciones para ajustar.Mantenga siempre las cuerdas y cadenas fuera5.2.2 Cord with Cord ConnectorYoung children can STRANGLE in cord and bead chain loops and in the loop(s) above the cord connector. They can also wrap cords around their necks and STRANGLE.Always keep cords and bead chains out ofchildren’s reach.Move cribs, playpens, and other furnitureaway from cords and bead chains. Children can climb furniture to get to cords. Los niños pequeños corren el riesgo deESTRANGULARSE en los lazos de las cuerdas ycadenas y enel lazo por encima de la trabe de la cuerda. También se pueden envolver las cuerdasalrededor del cuello y ESTRANGULARSE.Mantenga siempre las cuerdas y cadenasfuera del alcance de los niños.Mueva las cunas, los corrales y otros muebles lejos de las cuerdas y cadenas. Los niñospueden subirse a los muebles para llegar a5.2.3 Tension Device Hang tag (attach to tension device)Young children can STRANGLE in cord and bead chain loops. They can also wrap cords around their necks and STRANGLE.Always keep cords and bead chains out ofchildren’s reach.Move cribs, playpens, and other furnitureaway from cords and bead chains. Children can climb furniture to get to cords.Attach tension device to wall or floor. This Los niños pequeños corren el riesgo de ESTRANGULARSE en los lazos de las cuerdas y cadenas. También se pueden envolver las cuerdas alrededor del cuello y ESTRANGULARSE.Mantenga siempre las cuerdas y cadenasfuera del alcance de los niños.Mueva las cunas, los corrales y otros muebles lejos de las cuerdas y cadenas. Los niñospueden subirse a los muebles para llegar alas cuerdas.5.2.4 Cord Retraction DeviceYoung children can STRANGLE in cord and bead chain loops. They can also wrap cords around their necks and STRANGLE.Always keep cords and bead chains out ofchildren’s reach.Move cribs, playpens, and other furnitureaway from cords and bead chains. Children can climb furniture to get to cords. Los niños pequeños corren el riesgo de ESTRANGULARSE en los lazos de las cuerdas y cadenas. También se pueden envolver las cuerdas alrededor del cuello y ESTRANGULARSE.Mantenga siempre las cuerdas y cadenasfuera del alcance de los niños.Mueva las cunas, los corrales y otros muebles lejos de las cuerdas y cadenas. Los niñospueden subirse a los muebles para llegar alas cuerdas.5.2.5 Cord Shroud hang tag (attach to cord shroud)Young children can STRANGLE in cord and bead chain loops. They can also wrap cords around their necks and STRANGLE.Always keep cords and bead chains out ofchildren’s reach.Move cribs, playpens, and other furnitureaway from cords and bead chains. Children can climb furniture to get to cords.Do not remove looped cord from cord Niños pueden ESTRANGULARSE en los lazos de cuerdas y cadenas. Ellos tambien pueden envolver las cuerdas alrededor de sus cuellos y ESTRANGULARSE.Siempre mantenga las cuerdas y cadenasfuera del alcance de niños.Mueva cunas, corrales, y otros muebles lejos de las cuerdas y cadenas. Niños puedensubirse sobre los muebles para llegar a lascuerdas.5.2.6 Cord ShearWARNING ADVERTENCIAYoung children can STRANGLE in cord and bead chain loops. They can also wrap cords around their necks and STRANGLE.Always keep cords and bead chains out ofchildren’s reach.Move cribs, playpens, and other furnitureaway from cords and bead chains. Children can climb furniture to get to cords.Do not tie cords together. Make sure cords Los niños pequeños corren el riesgo de ESTRANGULARSE en los lazos de las cuerdas y cadenas. También se pueden envolver las cuerdas alrededor del cuello y ESTRANGULARSE.Mantenga siempre las cuerdas y cadenas fuera del alcance de los niños.Mueva las cunas, los corrales y otros muebles lejos de las cuerdas y cadenas. Los niñospueden subirse a los muebles para llegar a las cuerdas.5.2.7 Cordless Horizontal and Pleated Blind5.2.8 Roman Style BlindThis warning tag must be attached to the lower most section of lift cord on the back side of a Roman style product and be visible from the front of the shade upon installation.5.3 Installation, operational and adjustment instructions shall be consistent with current standards.5.3.1 Instructions for length adjustable products that require inner cord stop devices shall include how to adjust inner cord stop device(s) and the warning about the hazards of not correctly adjusting the inner cord stop device(s) in Section 5.3.1.1.5.3.1.1 Inner Cord Stop Warning (In English and Spanish) The word “warning” shall be in all uppercase letters measuring not less than 5/16 in. (8 mm) or 1.5 times the height of the warning message text, whichever is larger, and shall be preceded by the ANSI safety alert symbol (an equilateral triangle surrounding an exclamation point). The rest of the warning message text shall be in both uppercase and lowercase letters (sentence capitalization), with capital letters measuring not less than 3/16" (5 mm) or the height of most text in the instructions, whichever is larger. A pictogram of the fully lowered product with a circle around the inner cord stops and adjacent headrail, and a detail of the circled area showing the cord stops located no more than 6 in. (153 mm) below the headrail, shall be included in the warning. The warning shall be within a border in a prominent location on the installation instructions.Inner cords can pull out to form a loop, which can strangle a young s cuerdas internas pueden sacarse para formar un lazo en que puede ESTRANGULARSE un niño pequeño.•Los dispositivos de paro de la cuerda interna pueden diminuir este riesgo si están situados correctamente en el halado de las cuerdas. •Si los dispositivos de paro de cuerda interna5.4 Product Origins There shall be a permanent label or marking on each finished corded window covering product that identifies the name, city, and state of the U.S. manufacturer or importer or distributor or fabricator or seller, and the year of manufacture.6. TESTS AND PARAMETERS6.1 Cord Release Devices Cord release devices with multiple cords shall be tested with the design intent. Devices that join cord or bead loops or devices that detach cord or bead loops from head rails shall release as referenced in Appendix A.6.1.1 Single Loop Cord Release Device. Appendix A, A1.3.4.42.2.16.1.2 Multiple Loop Cord Release Device. Appendix A, A1.3.4.42.2.26.2 Cord Retraction Devices Cord retraction devices shall adhere to the following:6.2.1 The device shall passively retract the cord to within 6 in. (152mm) of the head rail and lock in this position. Sequential operations shall be required to unlock and unwind the cord for operation.6.2.2 The device shall be tested with multiple cords and at length in accordance with design intent. It shall meet one of the following requirements:6.2.2.1 The cord retraction device shall have a service life of 5,000 cycles. A cycle is completed when the device travels from the raised position to the lowered position and back to the raised position.retractiondevice shall fail in the locked and raised position, disabling thecord6.2.2.2Thewindow covering’s cord operation.6.2.3 If the device requires assembly at the time the product is installed, clear and accurate instructions shall be provided to describe installation.6.2.4 The device shall be constructed so that it can only be disassembled or detached from the cord loop by a sequential process or tools.6.3 Cord Shear Devices Cord shear devices shall adhere to the following:6.3.1 The cord shear device shall be tested in accordance with the procedures set forth in AppendixA.6.3.2 The cord shear device shall be attached to the cord or bead loop upon receipt by the end user.6.3.3 The cord shear device shall be constructed so that it can only be detached from the cord or bead loop with a sequential process or tools.6.3.4 Clear and accurate installation instructions shall be provided to describe installation. Once the cord shear device is installed, it shall perform as a passive device.6.3.5 The cord shear device is to be designed so the cord is not cut when simply pulling on the device’s housing. It shall not have any exposed buttons or plungers that would make the cutting feature obvious to young children while in its free hanging position. The cord shear device shall not have an accessible blade when the device is in the open position.6.4 Cord Shroud Device Cord shroud devices shall adhere to the following:6.4.1 The cord shroud device shall be designed so that when the window covering product is in the raised position, the cord shroud device shields the cords, eliminating their potentially hazardous exposed loops. When the window covering product is in the lowered position, the cord shroud device shall allow the cords to pass freely without restriction.6.4.2 The cord shroud device shall be designed so that it shields the cords by routing them through a series of openings no more than 1.5 inches apart.6.5 Tension Devices Tension devices for cord or bead loops shall adhere to the following:6.5.1 The tension device shall be designed so when not installed will, at least partially, prevent the lift system from moving the window covering through deployment or retraction.。