Parallel Blade Volume Damper 3000P-60X24 Smoke-Fire Damper and 2x4 panels * Soft

and 2x4 panels * Soft White

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 14" Duct Opening (front blades parallel to shortest dimension)

Perforated face grille

Spiral Diffuser Radius Flush Mount Diffuser Single Deflec

Parallel Blade Volume Damper 3000P-60X24 Smoke-Fire Damper and 2x4 panels * Softh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3. Options * 3000 PLL Low Leak Air Control