4 1/4" Vertical Mount Fire Damper 2633-26X6 Residential Registers & Grilles Designed for return applications and

Designed for return applications and as a vented access door to equipment

AA-HVL Series Engineering/Performance Data

Ceramic fiber blade insulation with fiberglass cover*

5/32” crossbars

enclosed in valve to assure trouble-free operation

4 1/4" Vertical Mount Fire Damper 2633-26X6 Residential Registers & Grilles Designed for return applications andh3. 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