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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
904 Series Performance Data
SD34 Submittal Drawing
Holds up to a 2" filter (not included) with filter retention tabs (FG2)
Ceiling opening must be 4” larger in length and width than the nominal duct size
3 Hour Out Of Air Fire Door Grille 2563-40X40 Smoke-Fire Damper 904 Series Performance Datah3. Standard Features * 2561 Square or rectangular fire door for vertical mount only. Maximum dimension 48w, 49h. For damper free area chart A click here * 2563 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. For damper free area chart B click here * 2565 Round fire door for vertical mount only. Available 4" thru 40" round. * UL and California State Fire Marshall approved * 2" thinline frame *
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