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This anthracite Arvani measures 800x500mm and mounts vertically, which makes it a straightforward fit for a cloakroom or a compact en-suite. Output is 1,388 BTU (407W) at ΔT50, the rating UK merchants normally quote.
It takes standard 1/2" connections and a pair of 15mm radiator valves, which are ordered separately.
Specification
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Size: 800x500mm
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BTU: 1388 - 1043
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Watt Output: 407 - 306W
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Recommended Area: Up to 4m²
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Modern anthracite flat panel towel radiator
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Built with durable low carbon steel and powder coated for corrosion resistance
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Vertical orientation for compact spaces
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Easy wall-mount installation
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High efficiency heat output to warm towels quickly
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1/2" inlets/outlets – BS EN442 compliant
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Valves not included (available separately)
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5-year guarantee
BTU values are provided as a range based on ΔT50°C (standard UK rating) and ΔT30°C (lower temperature systems).
Frequently asked questions
Will it fit a narrow wall?
At 500mm across and 800mm tall it is designed for tall, narrow wall space. Measure 500mm plus a little either side for your hands, and allow about 100mm underneath for the valve tails.
Why are two BTU figures quoted?
Heat output depends on how hot the water is. At ΔT50 this rail gives 1,388 BTU; drop the flow temperature, as a heat pump does, and it falls to about 1,043 BTU. Most UK merchants quote the ΔT50 number.
How does it compare with the other Arvani sizes?
The Arvani range runs from 650x450mm at 1,060 BTU to 1200x600mm at 2,487 BTU, in 10 sizes. This one is 800x500mm and 1,388 BTU, so there is a smaller and a larger option either side of it.
Are valves included?
Valves are separate. Angled where your pipes come out of the wall, straight where they come up from the floor. The connections are 1/2" BSP and take a standard pair of 15mm valves — in anthracite if you want them to disappear against the rail.
- Type: Heated Towel Rail
- Width: 500mm
- Height: 800mm
- Panels: Single Panel
- Heat output: Medium (1201–1700 BTU)
- Connection position: Side
- Valve style: Angled or Straight
Help choosing
A towel rail should keep the bathroom warm, not just dry towels. Check it's powerful enough for the room.
Enter your room size to see the heat output you need.
- Match the output to the room. Use the BTU figure from the calculator. In a bathroom, a towel rail alone often heats a small room; bigger rooms may need a radiator too.
- Check your connections. Measure the gap between your pipes and choose valves to suit: angled, straight or corner (see the valve helper on our valve pages).
- Heat pump? At the lower water temperatures heat pumps run at, expect roughly half the listed output.
- Summer use. Central heating rails only warm up when the heating is on. A dual fuel kit adds an electric element where the rail supports it.
Still not sure? Send us your measurements and we'll check for you.
