Opposed Blade Volume Damper 3000-0BD-62X56 Commercial T-20 Tamper Proof Screws

T-20 Tamper Proof Screws

For evaporative coolers or central blower systems

Extruded aluminum frame with steel roll formed blades and steel multi-shutter damper

Steel construction

1x2 T-Bar (10" x 22" duct)

Opposed Blade Volume Damper 3000-0BD-62X56 Commercial T-20 Tamper Proof Screwsh3. 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.