4" Horizontal/Vertical Mount Fire Damper 2634-44X12 Step Down Ceiling Diffuser Standard Features * Return air

Standard Features * Return air T-Bar lay-in filter grille * Removable louvered 20 gauge steel face * 20" x 20"x 1" filter (not included) * 7/8" fiberglass back plenum cut holes 6"-16" (collar by others) * Seismic support holes * Soft White

11/32” Wide x 1-27/32” High slots

*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches

Reinforced welded core and extra supports for heavy duty application

103 - three way

4" Horizontal/Vertical Mount Fire Damper 2634-44X12 Step Down Ceiling Diffuser Standard Features * Return airh3. 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