Volume Damper Low-Leak OBD 3000-0BDLL-24X30 Residential Registers & Grilles 2" thin-line roll formed out-of-airstream

2" thin-line roll formed out-of-airstream frame

91 Series Submittal

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 24" Duct Opening (front blades parallel to shortest dimension)

Standard Features 1” rim size (2” larger than nominal duct size / order size) 14 gauge steel construction Countersunk mounting holes for a flush appearance 1-27/32” Wide x 11/32” High slots on staggered centers

T-Bar Modular Core Diffuser with Round Collar 18-20

Volume Damper Low-Leak OBD 3000-0BDLL-24X30 Residential Registers & Grilles 2" thin-line roll formed out-of-airstreamh3. 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.