Opposed Blade Volume Damper 3000-0BD-15X15 Specialty Products inner dimension and outside dimension

inner dimension and outside dimension sizes available * Tamper proof screws * Standard Color

Square collar designed for a 20” × 20”

Galvanized Finish

Install with louvers in up or down position for best duct concealment

Opposed Blade Volume Damper 3000-0BD-15X15 Specialty Products inner dimension and outside dimensionh3. 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.