Copper Lineset 25FT--50FT long (1/4,3/8,1/2,5/8,3/4,7/8,9/8 ... (6.35+9.52)3M-15M 10FT-50FT1/4+1/2(6.35+12.7)3M-15M 10FT-50FT3/ ... (9.52+122.22)3M-15M 10FT-50FT3/8+1 1/8(9.52+28.575)3M-15M 10FT-50FTLine ... liquid line diameter for all standard residential systems is 1/4'' -1/2 inches in diameter. The suction line diameter will ... be either 3/8 ,1/2 ,3/4, 7/8 or 1 1/8 inches, depending on the size ...