4" Round Horizontal/Vertical Fire Damper 2650-6 Step Down Ceiling Diffuser Louvers designed with rolled rib

Louvers designed with rolled rib for maximum strength and rigidity

All steel parts with galvanized finish or zinc coating

Ideal for residential and light commercial application

Use for applications with round ductwork to create a clean and easy to install finish for your round registers or diffusers

inner dimension and outer dimension sizes available * Tamper proof screws * Standard Color

4" Round Horizontal/Vertical Fire Damper 2650-6 Step Down Ceiling Diffuser Louvers designed with rolled ribh3. Standard Features * 2649 Round damper for vertical mount only. Available 4" thru 52" round. * 2650 Round spring actuated (6) damper for vertical or horizontal mount. Available 4" thru 52" round. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G 90) * Self locking