Overlapping rings stepped down for efficient, draft-free diffusion. Outer ring design resists ceiling smudging. Made of white polypropylene and supplied with an adaptor. Two flow settings for easy control of air intake or output from 0 to 100% for outstanding efficiency. Can be connected to a flexible or rigid duct.
All-steel construction. Fan shaped sunburst pattern spreads air over wide area, 2-1/2 in base extension. Snap-in face removes for easy installation and cleaning. Single-valve volume control damper. Durable powder-coat painted finish.