Volume Damper Low-Leak OBD 3000-0BDLL-58X30 Residential Registers & Grilles Standard Features * Extruded aluminum

Standard Features * Extruded aluminum (

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 8" Duct Opening  (front blades parallel to shortest dimension)

with color matching Phillips Pozidriv screws

1600 Series Submittal

Square collar designed for a 20” × 20”

Volume Damper Low-Leak OBD 3000-0BDLL-58X30 Residential Registers & Grilles Standard Features * Extruded aluminumh3. 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.