Volume Damper Low-Leak OBD 3000-0BDLL-52X34 Residential Registers & Grilles 2" ADC compliant round collar

2" ADC compliant round collar with bead for ease of installation

Directional volume diffuser with 4-way removable core

Countersunk mounting holes for a flush appearance

All steel construction

102 PC - corner

Volume Damper Low-Leak OBD 3000-0BDLL-52X34 Residential Registers & Grilles 2" ADC compliant round collarh3. 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.