Volume Damper Low-Leak OBD 3000-0BDLL-56X56 T-Bar Surface mount fixed blade grille

Surface mount fixed blade grille with airfoil blades at 0°

Allows for 4-way airflow adjustment

52h * Interlocking steel roll-formed blade (3) with roll-formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3

All component parts

Designed for use in walls

Volume Damper Low-Leak OBD 3000-0BDLL-56X56 T-Bar Surface mount fixed blade grilleh3. 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.