This company from Wisconsin has just upgraded many of the fans in its spun aluminum lineup. To increase structural integrity, it has reduced curb cap sizes on models G and GB Centrifugal Roof Exhaust Fans and Models CUE and CUBE Centrifugal Roof Upblast Exhaust Fans up to size 160 and Model GRS-15 Gravity Ventilators. An optional grease collector, used with the company's kitchen hoods, allows for grease and rainwater to drain back down the duct through the hood.

Greenheck, P.O. Box 410, Schofield, WI 54476-0410; 715/359-6171; fax 715/355-2399.