Parallel Volume Damper Low Leak 3000PLL-24X22 Smoke-Fire Damper 18" or 24" lengths *

18" or 24" lengths * Soft White Options * Standard Color or Designer Color Finish available on this product

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 10" Duct Opening (front blades parallel to shortest dimension)

Standard Features * Stamped curved blades * Field adjustable for positive throws and control of face velocities * Provides uniform air distribution across ceiling or walls * Eight air patterns * All component parts

Options * Sleeve variations h3

120x120 multiple

Parallel Volume Damper Low Leak 3000PLL-24X22 Smoke-Fire Damper 18" or 24" lengths *h3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control