Standard Letters Documents
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A standard letter addressing Carlisle's recommendations for wood treatments and wood nailers.
Letter from FM highlighting changes recently made to Approval Standard 4470.
Flame Spread and Smoke Development Properties
A standard letter addressing membrane sheet flutter in Carlisle's mechanically fastened systems.
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Updated FM 4470 deck spans by wind rating/fastener spacing and deck gauge for 33 ksi and 80 ksi.