Parallel Blade Volume Damper 3000P-60X54 Smoke-Fire Damper Double deflection radius mount spiral

Double deflection radius mount spiral pipe grille with adjustable blades

Access door with 1-3/8" deep steel roll formed frame

904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 4" Duct Opening (front blades parallel to shortest dimension)

425 Series Submittal

PERFORMANCE DATA CB-T Series Engineering/Performance Data

Parallel Blade Volume Damper 3000P-60X54 Smoke-Fire Damper Double deflection radius mount spiralh3. 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