... exchangers for Midea, Gree, TCL, LG, Samsung, Panasonic etc.Product Features:1. Material: copper, aluminium, galvanized plate.2. Copper pipe: diameter ... 6mm, 31.75x27.5mm, equilateral triangle arrangement.7. Suitable for R134a, R22, R404a, R407c refrigerant and so on. ... ~0.20.105~0.25Fin Space(mm)1.20~4.001.20~4.001.20~2.21.20~2.03. ... date. copper tube shell and tube heat exchanger for air conditioner