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- Steel curved blade supply diffuser for surface mount; provided with OBDB damper
- Available in square neck sizes: 6"x6" - 24"x24"
- Adjustable curved blades in a fixed 1, 2, 2C, 3 or 4-way discharge pattern
- Blades are individually adjustable from the face of the diffuser to regulate the air volume & angle of discharge
- Opposed blade damper is galvanized steel, Multi-shutter damper is aluminum
- Surface mount with screw holes except sizes indicated by NSH (No Screw Holes)
- White powder coated epoxy finish