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Negator stainless steel closure springs mounted on spring pin brackets
Damper manufactured from corrosion tested galvanized mild steel (G-90)
Galvanized Finish
Delivers supply air in a 360° air pattern
Designed for ceiling or sidewall applications
3 Hour Out Of Air Fire Door Grille 2663-36X16 past 12 months Negator stainless steel closure springsh3. Standard Features * 2661 Square or rectangular fire door for vertical mount only. Maximum dimension 60x60. For damper free area chart A click here * 2663 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 60w x 52h. For damper free area chart B click here * 2665 Round fire door for vertical mount only. Available 4" thru 52" round. * 3 hour rated * UL and California State Fire Marshall approved * 4 1 4"
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