The Bisque Collection from Runtal North America consists of five models: Hot Spring, Flow Form, Seta, Quadrato, and Hot Hoop. Each is part of a closed-loop hot water heating system and is suitable for residential and commercial applications. Hot Spring comes in two versions and features tight coils, and Flow Form has industrial heating elements and comes in three sizes. With “pepper shaker” rounded tops, Seta has a stylish design. The collection has two towel heaters: Quadrato has a square shape and Hot Hoop is round. Depending on the model chosen, finishes include chrome, white, metallica, matt black, argenta, and mirrored stainless steel. Valves are included for each model.