Volume Damper Low-Leak OBD 3000-0BDLL-64X12 past 12 months Allows for 4-way airflow adjustment

Allows for 4-way airflow adjustment

904 - Double Deflection Adjustable Aluminum Blade Grille For a 34" x 18" Duct Opening (front blades parallel to shortest dimension)

Fits 1x1 ceiling grids (collar size 6"-10")

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

Volume Damper Low-Leak OBD 3000-0BDLL-64X12 past 12 months Allows for 4-way airflow adjustmenth3. 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.