Aspen 5 Ton Uncased 4-Row A-Coil, 23 in Pan, R-410 Non-Bleed TXV, Tailpiece Screen. Rifled copper tubing, enhanced aluminum fins. Immersion-tested at 500 psi, then nitrogen-pressurized and sealed. Liquid line - 3/8" ODS, suction line - 3/4" ODS on 1-1/2- 3 ton & 7/8" ODS on 3-1/2 - 5 ton. Externally mounted flowrater body with Schrader valve for hiss-testing. Heavy duty plastic drain pans on most models. Upflow without field modification; downflow applications requires included plate kit. AHRI certifiable with all brands of A/C and heat pump systems. ETL listed for use with both R-22 and R-410a when proper metering device is used. Popular options include factory or field installable TXV, powder painted stainless steel drain pan, and Schrader valve mounted on suction manifold.