Volume Damper Low-Leak OBD 3000-0BDLL-68X48 Residential Registers & Grilles 104 - four way *

104 - four way * 2x2 galvaneal steel panel with seismic support holes * Square to round No Labor Collar * Soft White Options * 104 D - steel multi-shutter damper * 104 O - steel opposed blade damper * 104 FR

Square collar designed for 22" x 22" duct

Holds up to 1" filter (not included)

3-Way and 4-Way Air Patterns

Stamped steel face with roll formed frame

Volume Damper Low-Leak OBD 3000-0BDLL-68X48 Residential Registers & Grilles 104 - four way *h3. 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.