Multi-position Air Handler, Features include: 1-1/2 thru 5 tons Environmentally Sound R-410A systems WAHM models have Plain copper tubes and aluminum fin coil WAHT models have Tin-coated copper tubes and aluminum fin coil. These coils are built with specialhairpins which are tin-coated to resist both general pitting corrosion and excessive Formicary Corrosion(indoor corrosion, an industry phenomenon). Multi-position installation - Upflow or horizontal left standard.- Horizontal right with minor modification and required Horizontal Gasket Kit.- Field convertible to downflow with required Horizontal Gasket Kit and available accessory kit. TXV metering device factory installed Sweat connections Primary and secondary drain fittings with brass inserts 5 amp automotive type fuse Multiple electrical entry locations Time delay relay (TDR) Field installed heater packages from 5 kW - 30 kW available separately HUD approved for manufactured housing 208/230-1-60 supply voltage Units tested and certified by manufacturer to achieve a 2% or less leakage rate at 1.0 inch water column1 inch (25mm) thick insulation with R value of 4.2 High efficiency ECM, 3-speed Motor No Heat Kit factory installed Factory installed washable permanent filter LIMITED WARRANTY5 year parts (with an additional 5 years parts if properly registered) limited warranty to the originalpurchaser only for owner-occupied dwellings - see warranty certificate for details.