4" Horizontal/Vertical Mount Fire Damper 2634-48X44 Residential Registers & Grilles 1x2 T-Bar (10" x 22"

1x2 T-Bar (10" x 22" duct)

Adjustable blades oriented for 3 or 4-way air flow pattern

Countersunk mounting holes with color matching Phillips Pozidriv screws

Eighteen air patterns

" Spiral pipe diameter must be 4” larger than width of grille

4" Horizontal/Vertical Mount Fire Damper 2634-48X44 Residential Registers & Grilles 1x2 T-Bar (10" x 22"h3. 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