Parallel Blade Volume Damper 3000P-46X20 Accessories Adjustable aluminum airfoil blades oriented

Adjustable aluminum airfoil blades oriented for 1 or 2 way airflow pattern

103 - three way

SD52 - Transition Box Spiral Pipe Grille (Single Deflection)

Standard Features * T-Bar lay-in panel with perforated face * 2x2 galvaneal steel panel with seismic support hangers * Round No Labor Collar attached to panel * Soft White Options * 105 P D - multi-shutter damper with hinged perforated face * 105 P O - opposed blade damper with hinged perforated face * TVB - Thermal Vapor Blanket * Square collar

57% free area * 1307: 13/16" lattice opening

Parallel Blade Volume Damper 3000P-46X20 Accessories Adjustable aluminum airfoil blades orientedh3. 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