4 1/4" Vertical Mount Fire Damper 2633-30X10 T-Bar floors and partitions with fire

floors and partitions with fire resistance ratings of 2 hours or less (for ceiling application

Concealed mounting holes

4-way flush step down steel diffuser

22 gauge butterfly style galvanized steel blades

4 1/4" Vertical Mount Fire Damper 2633-30X10 T-Bar floors and partitions with fireh3. 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