The Spiral Diffuser can be directly mounted to round metal ductwork, eliminates the need to attach mounting.

The Spiral Diffuser can be directly mounted to round metal ductwork, eliminates the need to construct and attach separate mounting assemblies and can be installed quickly, the manufacturer said. The units are constructed of extruded aluminum with a standard satin-anodized finish or a bright white finish. They are available in single- or double-deflection vanes, and with a slot-style face front.

Hart & Cooley Inc., 500 E. Eighth Street, Holland, MI 49423; (616) 392-7855; (616) 392-7971.

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