"An evaporative cooler can help keep your greenhouse cool and more comfortable throughout the summer. Enjoy fresh, naturally cooled air at a fraction of the cost of refrigerated air-conditioning. Plus an evaporative cooler adds humidity to the greenhouse, and filters the air of dust and insects. Evaporative coolers use a powerful fan to push outside air through a wet cooling pad and into the greenhouse. Water evaporating from the pad absorbs heat and cools incoming air by 15° to 30° F. Simple Installation: Coolers are prewired. Remove a small panel of greenhouse glass or siding (approx. 23"" x 15"") for the cooler duct. Hook up the water supply, adjust the float, and plug in the power cord. For automatic control, order #3136 Prewired Fan Thermostat. Coolers come with 2-speed fans, and are designed with a special clog-free water distribution system for uniform pad wetness and cooling. Welded steel cabinet is protected by PolyBond, an epoxy-type finish that looks new for years. Delivery by motorfreight, call for shipping rates. 115 volts. UL listed."
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