Horizontal Radiators View and buy online our vast selection of horizontal radiators. Suppliers such as DeLonghi, Apollo, The Radiator Company, Aestus, Sussex, Aeon, Reina, Zehnder & Myson. Our ranges include column radiators, flat panel radiators and finned tubed radiators. Most of the horizontal radiators are finished in white although RAL colour finishes are available, some as quickly as 7 working days. All horizontal radiators are wall mounted but there are different feet options if required, such as traditional cast feet or welded feet on the column radiators. Alot of Warm Rooms horizontal radiators are available on a next day delivery.