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ALI A14.9-2004
- American National Standard - Ceiling Mounted Disappearing Climbing Systems - Safety Requirements
- standard by American Ladder Institute, 01/01/2004
- Publisher: ALI
$61.00$122.00
This standard prescribes rules and requirements for design, construction, testing, care, installationa and use of permanently installed metal or wod ceiling mounted disappearing climbing systems.
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