Parallel Blade Volume Damper 3000P-34X30 Residential Registers & Grilles 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille for a 16" x 8" Duct Opening   (front blades parallel to shortest dimension)

12" and 14") * HVD OR - factory installed opposed radial damper (sizes 6"-14") * HVD FR - U

Individually welded 14 guage diffusion bars

Standard Features * 1/2" x 1/2" x 1/2" aluminum lattice face *

Parallel Blade Volume Damper 3000P-34X30 Residential Registers & Grilles 904 - Double Deflection Adjustableh3. 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