The Belthorn inset kitchen sink is our smallest model, just 38cm square, but with a large 3.5″ outlet that makes it suitable for installing with a waste disposal unit. The Belthorn is generally fitted as a second sink for food preparation or drinking water, especially when matched with a Perrin & Rowe instant hot tap or filtered water tap. It can be inset or undermounted. The Shaws Square sink offers a similar design at a larger size.