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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
Installation Instructions * UL approved installation instructions
Fractional
Note: Sizes are Listed Nominal Duct Opening
Hinged removable extruded aluminum face frame with signature line marks
Opposed Blade Volume Damper 3000-0BD-70X56 Accessories 52h * Interlocking steel roll-formedh3. 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.
US$ 49.95
US$ 169.50
US$ 19.99
