Volume Damper Low-Leak OBD 3000-0BDLL-72X46 Commercial SD52 - Transition Box Spiral

SD52 - Transition Box Spiral Pipe Grille (Single Deflection)

Designed for use in walls

RS34 Series Engineering/Performance Data

Standard Features * Step-down design with four-way air diffusion * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Step-down feature allows for uniform airflow distribution * Soft White Options * 100 - diffuser only (no damper) * 100 D - diffuser with steel multi-shutter damper * 100 O - diffuser with steel opposed blade damper * No Labor Collar - Square to round * Tamper proof screws * Standard Color

Countersunk mounting holes for a flush appearance

Volume Damper Low-Leak OBD 3000-0BDLL-72X46 Commercial SD52 - Transition Box Spiralh3. 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.