4 1/4" Vertical Mount Fire Damper 2633-48X20 past 12 months Filter retention tabs

Filter retention tabs

Countersunk mounting holes for flush appearance

102 P - two way

Options * 2800 Series - Dynamic Fire Damper * Sleeve variations * 304 stainless steel construction * Fractional and odd sizes available h3

1/4” crossbars

4 1/4" Vertical Mount Fire Damper 2633-48X20 past 12 months Filter retention tabsh3. 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