The Design House Dishwasher Air Gap prevents waste water from backing up into your dishwasher and contaminating your dishes. This air gap features a brass cap finished in a sleek matte black and durable plastic body. There is a 5/8-inch and 7/8-inch inlet. Hose connection is not included. Designed and manufactured by Design House, the trusted source for quality lighting, hardware, plumbing, kitchen, and bath products for every taste and budget.