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booster heat) HSPF: 7.1 PL18FK Cassette Dimensions: Cooling capacity: 18,400 BTU/h W:52-3/4” D:32-1/4” H:10-1/8” SEER: 10.2 Cassette Dimensions: W:32-1/4” D:32-1/4” H:10-1/8” PLH36FK Cooling capacity: 35,400 BTU/h PL24FK PLH18FK SEER 10.4 Cooling capacity: 23,600 BTU/h Heating capacity: 38,000 BTU/h SEER: 10.0 PLH18FK (47,600 w/ aux. booster heat) Cassette Dimensions: Cooling capacity: 17,300 BTU/h HSPF: 7.4 W:32-1/4” D:32-1/4” H:10-1/8” SEER: 10.3 Cassette Dimensions: Heating capacity: 18,000