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NGD - Narrow ceiling grid dimples for 9/16" T-Rails
PERFORMANCE DATA 907 Series Engineering/Performance Data
Square or rectangular for vertical mount only
Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension
blades prevent metal on metal rattle
Volume Damper Low-Leak OBD 3000-0BDLL-34X22 Step Down Ceiling Diffuser NGD - Narrow ceiling gridh3. 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.
