600 x 400mm Horizontal Radiators

Looking for a horizontal radiator around 600mm high and 400mm wide? We have 7 horizontal radiators in stock in this size from Ethiant and Carisa, priced from £86.40 to £273.79 with heat outputs from 1,068 to 2,344 BTU/hr (ΔT50). Actual dimensions in this group run from 600–600mm high and 400–425mm wide; the exact size, pipe centres and output of each model are on its product page.

A 600 x 400 horizontal radiator is the size most UK homes were built around, so it usually replaces an existing radiator without moving the pipework, and the highest-output models here will heat a bedroom, home office or small kitchen. Every model is in stock for free delivery to mainland England and Wales, and each product page shows the certified heat output for every size so you can match it to your room with our BTU calculator.

600 x 400mm Horizontal Radiators in stock

Compare every 600 x 400mm horizontal radiator in stock

Model	Finishes	Sizes in this group	Heat output (BTU/hr, ΔT50)	From
Ethiant Horizontal Single Flat Panel Radiator 600	Anthracite	600 × 420mm	1,542	£86.40
Traditional 2 Column Horizontal Radiator 600mm Height	Black, White	600 × 425mm	1,328	£86.40
Traditional 3 Column Horizontal Radiator 600mm Height	Black, White	600 × 425mm	1,833	£112.32
Traditional 4 Column Horizontal Radiators 600 Height	White	600 × 425mm	2,344	£164.32
Slimline Horizontal Mild Steel Radiator	Anthracite, White	600 × 400mm	1,068	£177.12
Carisa Plata Horizontal Aluminium Designer Radiator	Textured Anthracite, Textured White	600 × 420mm	1,179	£226.92
Carisa Plata Double Horizontal Aluminium Designer Radiator	Textured Anthracite, Textured White	600 × 420mm	1,632	£273.79

Questions about 600 x 400mm horizontal radiators

How much heat does a 600 x 400mm horizontal radiator give out?

Between 1,068 and 2,344 BTU/hr at ΔT50 across the 7 models on this page. The highest output here is the Traditional 4 Column Horizontal Radiators 600 Height at 2,344 BTU/hr (688 W). All figures are the manufacturers’ certified outputs to EN 442, quoted at ΔT50 — the UK standard for sizing central-heating radiators.

Which 600 x 400mm horizontal radiator is the best value for heat?

On heat per pound it is the Ethiant Horizontal Single Flat Panel Radiator 600: 1,542 BTU/hr for £86.40, about 18 BTU for every £1. The cheapest model on the page starts at £86.40.

What size room will it heat?

It depends on the model — the range on this page runs from a cloakroom, en-suite or small box room at 1,068 BTU/hr up to a bedroom, home office or small kitchen at 2,344 BTU/hr. A well-insulated modern room needs far less than an older one with single glazing and an outside wall, so use our BTU calculator with your room’s measurements before you choose.

What colours and finishes are available?

In this group we have 6 in white, 4 in anthracite, 2 in black. Colour is chosen as a finish option on the product page.

What else do I need to fit it?

A pair of radiator valves (a thermostatic set is the usual choice) — see our valves and accessories. Wall brackets are supplied with every radiator, and column radiators in this group can be fitted with feet where the wall will not take the full weight. Delivery to mainland England and Wales is free.

Related sizes and ranges

600 x 350mm Horizontal Radiators · 600 x 450mm Horizontal Radiators · 600 x 500mm Horizontal Radiators · 500 x 400mm Horizontal Radiators · 600mm High Horizontal Radiators · 400mm Wide Horizontal Radiators · 1,000–2,000 BTU Horizontal Radiators · 2,000–3,000 BTU Horizontal Radiators

Back to Radiators by size.