Opposed Blade Volume Damper 3000-0BD-70X68 Smoke-Fire Damper Available in 4" through 29"

Available in 4" through 29" round

Options * MAR - Mounting Angle Ring (sold in pairs - 2 needed

Nylon bushings on adjustable blades prevent metal on metal rattle

Tool Operated Opposed Blade Damper

Standard Features * Stamped 22 gauge steel curved blade T-Bar lay-in supply diffuser * Field adjustable * Five air patterns: 101 - one way

Opposed Blade Volume Damper 3000-0BD-70X68 Smoke-Fire Damper Available in 4" through 29"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.