The BlueBuilt condensation drain hose is 1.5 meters long and suitable for condensation and heat pump dryers. By connecting the condensation drain hose to the water drain, you won't need to empty your dryer's condensation tank. The moisture from your laundry automatically drains via the water drain. The hose's diameter is 1.5 centimeters. Want to connect your dryer to the same drain as your washing machine? Purchase a separate Y drain set. This allows you to connect both drain hoses to 1 drain.