I was working on a portable HVAC unit for Frontier airlines that they use to heat and cool aircraft while at the gate. This monster has a 350 HP Cummings diesel turning an 18 KW generator that run two 15 ton Trane compressors. The blower and condenser motor are both 15 HP. I was having issues reconstructing Tranes 138.5º bend in the 6" they did it coming off the compressor. Hot, tired and loaded with a box of fittings this is what I came up with.