Volume Damper Low-Leak OBD 3000-0BDLL-42X18 Specialty Products Standard Features * Stamped steel

Standard Features * Stamped steel curved blade T-Bar lay-in diffuser with perforated face * Five air patterns: 101 P - one way

Center margins are mounted on the backside of the grille for a streamlined continuous look

22 gauge butterfly style galvanized steel blades

Dampers above 80 square inches free area will be provided with blade insulation

22 gauge steel blades with an insulated blanket

Volume Damper Low-Leak OBD 3000-0BDLL-42X18 Specialty Products Standard Features * Stamped steelh3. 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.