4" Horizontal/Vertical Mount Fire Damper 2634-22X10 past 12 months 3/4” Wide x 3/4” High

3/4” Wide x 3/4” High square holes

Double deflection transition box mount spiral pipe grille

Tamper-proof Screws

Opposed Blade Damper standard on 4" widths

available 4" through 40" round (2549)

4" Horizontal/Vertical Mount Fire Damper 2634-22X10 past 12 months 3/4” Wide x 3/4” 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