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The coils are available for use in R-22 systems. They are housed in a durable gauge painted cabinet and fully insulated for quiet, efficient operation. Performance: Rated in accordance with ARI Standard 210/240 A-Coils offer low pressure drops to enhance system performance and airflow characteristics Quality Built: Coils have sweat fitting refrigerant connections Widths match flush with Fedders gas furnaces Primary and secondary condensate drain connections are 3/4" F.P.T. – Flush Mounted Conden