Parallel Volume Damper Low Leak 3000PLL-50X12 T-Bar * 3100 Series - Face

* 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1/2" beyond the air control frame) * Round operating shaft (1/2" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available

CB20 - two way

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

Blades parallel to shortest dimension

Parallel Volume Damper Low Leak 3000PLL-50X12 T-Bar * 3100 Series - Faceh3. 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