Parallel Blade Volume Damper 3000P-56X18 Residential Registers & Grilles Standard Features 1” rim size

Standard Features 1” rim size (2” larger than nominal duct size / order size) 14 gauge steel construction Countersunk mounting holes for a flush appearance 1-27/32” Wide x 11/32” High slots on staggered centers

904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)

Standard Features * Heavy guage cold roll steel (same as 350 series) * Ideal for return air in the toe space areas between kitchen cabinets

Designer Color or Plated Metal Finish available on this product

Square collar designed for 22" x 22" duct

Parallel Blade Volume Damper 3000P-56X18 Residential Registers & Grilles Standard Features 1” rim sizeh3. 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