Volume Damper Low-Leak OBD 3000-0BDLL-70X18 Specialty Products 60% free area * Soft

60% free area * Soft White Options * Countersunk screwholes with matching Phillips #8 x 1-1/2" oval Screws * 10 or 12 gauge steel * Tamper proof screws

904 Series Performance Data

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 14" Duct Opening(front blades parallel to shortest dimension)

and 2x4 panels * Soft White

Standard Features * 1/2" spacing dual angular louvers * 22 & 20 gauge cold roll steel * Mullions are reinforced with stiffeners for greater strength * For applications where greater air volume is required * Install with louvers in up or down position for best duct concealment * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * Tamper proof screws * Standard Color

Volume Damper Low-Leak OBD 3000-0BDLL-70X18 Specialty Products 60% free area * Softh3. 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.