Parallel Blade Volume Damper 3000P-70X24 Residential Registers & Grilles T-Bar hinged 2 Cone Step

T-Bar hinged 2 Cone Step Down Diffuser with Round Collar

904 - Double Deflection Adjustable Aluminum Blade Grille For a 40" x 18" Duct Opening (front blades parallel to shortest dimension)

Galvanized Finish

Type 316 stainless steel

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 14" Duct Opening (front blades parallel to shortest dimension)

Parallel Blade Volume Damper 3000P-70X24 Residential Registers & Grilles T-Bar hinged 2 Cone Steph3. 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