MFD 20/30 – UL555 motorized fire damper

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Fire Rating : 20 Series-11⁄2 hour ; 30 Series-3 hour.
Blade Type : 3V Single Skin; A : ParalleI Operation

Construction : Galvanized Steel (GI), Stainless Steel (SS)

UL-555 Test Ratings

Fire Rating : 1 1⁄2 hrs. / 3 hrs Max Velocity : 2000 fpm
Max Operating Pressure : 4 in. w.g (1000 pa)

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