Parallel Blade Volume Damper 3000P-42X42 past 12 months Double deflection surface mount grille

Double deflection surface mount grille with adjustable airfoil blades

with 75% free area Options 14 GA 304 SS Construction 12 GA (

Standard Features * Heavy duty honeycomb construction * Blades run parallel to longest dimension given * Gym Grade - includes welded core and extra supports for heavy duty application * Mounting holes for sidewall and ceiling application * Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system * Soft White Options * No mounting holes * Tamper Proof Screws * Standard Color

Check Out The All About Spirals page

Parallel Blade Volume Damper 3000P-42X42 past 12 months Double deflection surface mount grilleh3. 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