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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
Provides 4-way air flow on one plane
904 Series Performance Data
Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less
3/4” Wide x 3/4” High square holes
see 1560 Series * Tamper proof screws * Standard Color
Volume Damper Low-Leak OBD 3000-0BDLL-24X22 Specialty Products Provides 4-way air flow onh3. 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.
