Aspen 2.5 Ton Uncased 3-Row A-Coil, 16 in Pan, Flowrater Piston, Schrader valve on the suction line. Rifled copper tubing, enhanced aluminum fins. Externally mounted flowrator body with Schrader valve for hiss-testing. Heavy duty plastic or metal drain pans. Embossed galvanized cabinets standard. Cabinet feature furnace connectors. Upflow without field modification; downflow application requires field kit (included). Split access doors in front of cabinet for east service access. Fully insulated foil-faced insulation. AHRI certifiable with all brand of AC and HP systems. ETL listed for use with both R-22 and R-410A when proper metering device is used.