Square Tube Towel Radiators – for Central Heating, Electric, Thermostatic Electric or Dual Fuel. Available in small, medium or large sizes. These heated towel rails can be wall mounted in the bathroom or kitchen. Colours include chrome, white, lava grey or beach. We have designer models in stock. Brands: Sol*Aire, Eucotherm. Buy Designer Square Tube Towel Radiators from Richmond Radiators UK Online Shop.