4 1/4" Vertical Mount Fire Damper 2633-28X6 Step Down Ceiling Diffuser AA-HVL Series Engineering/Performance Data

AA-HVL Series Engineering/Performance Data

Standard Features * Full size fixed bar blade T-Bar lay-in return air grille *

back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj

3/16” holes on 1/4” staggered centers

4 1/4" Vertical Mount Fire Damper 2633-28X6 Step Down Ceiling Diffuser AA-HVL Series Engineering/Performance Datah3. 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