atsduct.com
atsduct.com WEBATS defines “Fire Safe” ducts are those having Factory Mutual FM 4922 Approval for Fume and Smoke Exhaust in Cleanrooms without the need for internal fire protection sprinklers. ATS defines “Fire Safe” ducts are those having Factory Mutual FM 4922 Approval for Fume and Smoke Exhaust in Cleanrooms without the need for internal fire protection sprinklers.
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