Volume Damper Low-Leak OBD 3000-0BDLL-56X12 Accessories Countersunk mounting holes with color

Countersunk mounting holes with color matching Philips Pozidriv screws

1/2" spacing dual angular louvers

For evaporative coolers or central blower systems

REVIT FILES T-Bar Modular Core Diffuser with Round Collar 16

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 30" Duct Opening (front blades parallel to shortest dimension)

Volume Damper Low-Leak OBD 3000-0BDLL-56X12 Accessories Countersunk mounting holes with colorh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee 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.