LA/LH Series - Features & Nomenclature LA/LH Series - Features & Nomenclature Product Features Patented lanced fin design. R-410A, R-22, A/C and heat pump compatible. Dual 3/4" FPT condensate drains. Liquid line refrigerant connections are 3/8" ODF. Suction line refrigerant connections are 7/8" ODF. Dual circuit coils have row split circuiting allowing full coil surface to be active when 1 or 2 circuits are operating. Factory installed TXV valves. Up or down airflow compatible. Coils are air pressure tested at 500 psi, leak tested with helium, sealed with rubber plugs, then charged with dry air. Drain pans are constructed of aluminum to resist corrosion. Heavy gauge embossed galvanized cabinets fully lined with 1/2" insulation. Left hand drain and refrigerant connections. All coils are individually packaged on skids. Patented lanced fin design. R-410A, R-22, A/C and heat pump compatible. Dual 3/4" FPT condensate drains. Liquid line refrigerant connections are 3/8" ODF. Suction line refrigerant connections are 7/8" ODF. Dual circuit coils have row split circuiting allowing full coil surface to be active when 1 or 2 circuits are operating. Factory installed TXV valves. Up or down airflow compatible. Coils are air pressure tested at 500 psi, leak tested with helium, sealed with rubber plugs, then charged with dry air. Drain pans are constructed of aluminum to resist corrosion. Heavy gauge embossed galvanized cabinets fully lined with 1/2" insulation. Left hand drain and refrigerant connections. All coils are individually packaged on skids.