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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
Individually welded 14 guage diffusion bars
Product sizes available to fit spiral pipe diameter 8” – 48
Nylon bushings for easy adjustment and quiet setting of blades running parallel to shortest dimension
For damper free area chart A click here * 2563 - Out-of-Airstream fire door
52h * Interlocking steel roll-formed blade (3) with roll-formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3
Volume Damper Low-Leak OBD 3000-0BDLL-68X28 past 12 months Individually welded 14 guage diffusionh3. 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.
