4" Horizontal/Vertical Mount Fire Damper 2634-26X12 T-Bar 7/8” Wide x 7/8” High

7/8” Wide x 7/8” High square holes

Extruded aluminum frame with steel roll formed blades and steel multi-shutter damper

Holds up to 1" filter

Holds up to a 1" filter (not included) with filter retention tabs (FG1)

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4" Horizontal/Vertical Mount Fire Damper 2634-26X12 T-Bar 7/8” Wide x 7/8” Highh3. Standard Features * 2633 Square or rectangular out of airstream fire damper for vertical mount only. * 2634 Square or rectangular Spring actuated (6) out of airstream fire damper for horizontal or vertical mount. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Maximum dimension 60w, 52h * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion