Volume Damper Low-Leak OBD 3000-0BDLL-46X30 T-Bar Unique fan-shapped pattern lends to

Unique fan-shapped pattern lends to both heating and air conditioning applications

Margin edges are 7/8" projection for baseboard installation

Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system

Zinc plated steel closure spring

Note: Sizes listed are the duct or opening size the grille will fit into

Volume Damper Low-Leak OBD 3000-0BDLL-46X30 T-Bar Unique fan-shapped pattern lends toh3. 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.