Parallel Volume Damper Low Leak 3000PLL-44X28 Smoke-Fire Damper Installation Instructions * UL approved

Installation Instructions * UL approved installation instructions

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

SD34 - Transition Box Spiral Pipe Grille (DOUBle Deflection)

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

Blade lock to secure blades once the product is activated

Parallel Volume Damper Low Leak 3000PLL-44X28 Smoke-Fire Damper Installation Instructions * UL approvedh3. 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