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Uniform 360 degree discharge pattern
*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches
Standard Features * 1/2" x 1/2" x 1/2" aluminum lattice face *
* UL and California State Fire Marshall approved * 2" thinline frame * 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
Front blades parallel to shortest dimension
Volume Damper Low-Leak OBD 3000-0BDLL-66X66 Specialty Products Uniform 360 degree discharge patternh3. 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.
