Aspen 5 Ton Cased 3-Row A-Coil, 21 in, R-454B 20% Bleed TXV. Rifled aluminum tubing, enhanced aluminum fins. Embossed galvanized cabinets standard. Left- or right-hand refrigerant and plumbing connections. Upflow, horizontal right, and horizontal left without field modification—downflow application requires a field kit, sold separately. Split access doors in front of cabinet for easy service access. Fully insulated foil-faced insulation. Includes factory mounted A2L sensor/clip, and standard RDS kit included in packaging.