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1957 GIBSON ROOM AIR CONDITIONERS
Gibson’s standard room air conditioner models for 1957 (photos one, two, three and four) are very high quality units (1½ hp shown). Gibson introduced new for 1957 their “Trimline” series (photo five) available in low to medium capacities. The “Trimline” series was the first to use Gibson’s “Air Sweep” motorized oscillating air discharge louver arrangement.
