Volume Damper Low-Leak OBD 3000-0BDLL-66X52 Commercial Eighteen air patterns

Eighteen air patterns

Ceiling opening must be 4” larger in length and width than the nominal duct size

Designed for return applications and as a vented access door to equipment

Square or rectangular for vertical mount only

Spiral Diffuser Radius Flush Mount Diffuser Single Deflec

Volume Damper Low-Leak OBD 3000-0BDLL-66X52 Commercial Eighteen air patternsh3. 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.