Dura Flex Condensate Drain Hose 16/18mm x 50mtr from Reece
Amazon.com: HOXHA Air Conditioner Drain Hose Kit, Plastic Tubing for AC Condensate, Flexible&Durable AC Drain Hose for Mini Split AC&Portable AC Washer Dishwasher Faucet, 5 FT : Home & Kitchen
DuctlessAire 5/8 in. x 26 ft. UV Protected Universal Condensate Drain Line for Ductless Mini Split Air Conditioner Indoor Units DL16-26 - The Home Depot