Pay in 4 interest-free payments of $84.63 Learn more
Ships within 48 hours · Estimated delivery Sep 5 - Sep 10
blades prevent metal on metal rattle
Steel galvaneal construction
Check out the All About Spirals page
Designed to handle high volumes of air with horizontal flow
with 54% free area
Volume Damper Low-Leak OBD 3000-0BDLL-20X20 past 12 months blades prevent metal on metalh3. 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.
