Volume Damper Low-Leak OBD 3000-0BDLL-62X46 Smoke-Fire Damper * UL and California State

* UL and California State Fire Marshall approved * 4-1/4" standard frame style * Maximum dimension 60w

CSFM California State Fire Marshal listed

904 - Double Deflection Adjustable Aluminum Blade Grille for a 16" x 8" Duct Opening   (front blades parallel to shortest dimension)

1550 Series Engineering/Performance Data

Standard Features * Fixed bar blades parallel to 1st dimension given *

Volume Damper Low-Leak OBD 3000-0BDLL-62X46 Smoke-Fire Damper * UL and California Stateh3. 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.