Parallel Volume Damper Low Leak 3000PLL-44X28 Smoke-Fire Damper w/ Screwdriver Operated Opposed Blade

w/ Screwdriver Operated Opposed Blade Damper

Holds up to a 4" filter (not included) with filter retention tabs (FG4)

SD34 - Transition Box Spiral Pipe Grille (DOUBle Deflection)

904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 8" Duct Opening  (front blades parallel to shortest dimension)

Please contact us for a quote on optional Stainless Steel Construction or Fractional Sizes

Parallel Volume Damper Low Leak 3000PLL-44X28 Smoke-Fire Damper w/ Screwdriver Operated Opposed Bladeh3. 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