• High efficiency lanced fin design • “No-hassle” 5 year warranty. • R-22, R-410A, AC & Heat Pump compatible. • All coils have durable packaging with bar coded labels on the box. • Threaded expansion valves available factory installed or as a field installed kit. • Coils are air pressure tested at 500 psi, leak tested with helium, sealed with rubber plugs, then charged with dry air. • Piston options include externally accessible body for easy piston change out and/or TXV installation. • Microban® antimicrobial additive to inhibit the growth of mold and mildew in the drain pan. • UV resistant drain pans are molded of high temperature (450 deg. F) engineered polymer. • Copper refrigerant connections for easy brazing on both copper and aluminum slab models. • Cased coil cabinets are fully lined with 5/8" foil faced insulation. • Non-captive refrigerant lines with long stubs make for easy installation. • Enhanced refrigerant pipe grommets: secure, tight, and easy to install. • Copper distributor tube assembly provides brass to brass threads for trouble-free service of TXV. • Expansion valve with improved temperature sensing: 1.) Mounted inside cabinet to prevent external sweating 2.) Bulb clamped standard factory installed • Cabinet insulation hold down tabs for easy drain pan removal. • Interlocking doors reduce air leakage and allow for easy access. • Foam drain seal for reduced air leakage. • Maximum CFM printed on the label of each coil. • Suction line refrigerant connections are 3/4" ODF (A-Coil 18-36 size models) or 7/8" ODF (A-Coil 42-60 size models) • Suction line refrigerant connections are 1.125”. • Corrosion resistant coil header plates.