4 1/4" Vertical Mount Fire Damper 2633-14X6 Smoke-Fire Damper 60% free area * Soft

60% free area * Soft White Options * Countersunk screwholes with matching Phillips #8 x 1-1/2" oval Screws * 10 or 12 gauge steel * Tamper proof screws

Fits 1x1 ceiling grids (collar size 6"-10")

Holds up to a 4" filter (not included) with filter retention tabs (FG4)

Adjustable steel roll formed blades oriented for 1 or 2 way airflow pattern

Margin edges are 7/8" projection for baseboard installation

4 1/4" Vertical Mount Fire Damper 2633-14X6 Smoke-Fire Damper 60% free area * Softh3. 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