Belt- and direct-drive adjustable, pitched-vane axial fans are designed to efficiently move high volumes of air using a minimal amount of space, says the manufacturer. The compact vane axial fans include airfoil-shaped case aluminum blades and integral straightening vanes that work together to provide mechanical efficiencies of up to 75%, says the company. The fans are designed for use where space is limited, such as in new construction or retrofit situations.

Greenheck, P.O. Box 410, Schofield, WI 54476-0410; 715-359-6171; 715-355-2399 (fax); info@greenheck.com (e-mail); www.greenheck.com (website).

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