The new GL ACER stainless steel evaporative cooler for rooftop mounting comes with an energy-efficient motor, direct-drive tubeaxial fan, corrosion-proof air blades, stainless motor mount, 18-ga stainless steel casing sump, premium-efficiency stainless steel pump, and heavy-duty brass water fill valve, says the company. The unit uses half the energy of conventional coolers and produces 20% more cooling, the manufacturer says.

Spec-Air, P.O. Box 509, Canutillo, TX 79835-0509; 800-288-0892 or 915-886-5112; 915-886-5851 (fax).