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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
Standard Features * Extruded aluminum construction with steel multi-shutter damper * Margin edges are 7/8" projection for baseboard installation * Nylon bushings for easy adjustment and quiet setting of airfoil blades running parallel to shortest dimension * Countersunk mounting holes for flush appearance
Concealed mounting holes
Countersunk mounting holes for flush appearance with color matching Phillips posi- drive screws
contour molded fiberglass back with a foil barrier backing
Parallel Volume Damper Low Leak 3000PLL-20X20 Step Down Ceiling Diffuser Standard Features * Extruded aluminumh3. 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
