Product Description

Our Ultima and Ultima+ heavy duty Low Surface Temperature radiators offer a safe and robust heating solution with a wide variety of styles and options that make them ideal for any commercial environment.

Manufactured from flat steel tubes, each basic LST cover consists of 2 endboxes, front panel, grilles, brackets and, depending on the style, a solid top.

Features & benefits


  • Ultima NHS range fully conforms with NHS guidelines for ‘Safe Hot Water & Surface Temperatures’ and HSE health services information sheet ‘Managing the risks from hot water and surfaces in health and social care’ by ensuring surface temperatures do not exceed 43°c.
  • Manufactured and tested in accordance with BS EN 442.
  • Wide range of sizes and types offers a bespoke product offering to match any requirement.
  • Available in Horizontal and Vertical models.
  • Available in over 200 RAL colours.
  • Curved edges for safety.
  • Bespoke TRV cut-outs available.
  • Manufactured and tested in accordance with BS EN 442 and the NF quality mark requirements.


Merriott products are guaranteed for a period of 10 years from date of purchase in respect of defective materials and workmanship. The system should be designed in accordance with British Standard Code of Practice for Water Based Heating Systems in Buildings BS EN 12828:2012+A1:2014 and BS EN 12831: 2003. The installation and commissioning of the system should comply with BS EN 14336:2004. On completion of the installation, the system should be properly flushed and filled in accordance with the British Code of Practice for the Treatment of Water in Domestic Hot Water Central Heating Systems BS 7593:2006, Part L of Building Regulations and Good Practice Guidance for Scotland. Merriott strongly recommends the use of corrosion inhibitor for all applications. Failure to observe these standards may invalidate the manufacturer’s warranty.