Volume Damper Low-Leak OBD 3000-0BDLL-66X34 Residential Registers & Grilles 055 T6 extruded aluminum frame

055 T6 extruded aluminum frame * 90% free area * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 600 O - opposed blade damper * No Labor Collar - Square to round (square sizes only) * 600 T - T-Bar mount * 1/2" x 1/2" x 1" Lattice or 1" x 1" x 1" Lattice * Fractional sizes

Options * Sleeve variations * Fractional and odd sizes available h3

Countersunk mounting holes for flush appearance with stainless sheet metal screws

SD34 Series Performance Data

Hinged removable face with hinges parallel to longest side

Volume Damper Low-Leak OBD 3000-0BDLL-66X34 Residential Registers & Grilles 055 T6 extruded aluminum frameh3. 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.