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Arvani in white is a flat panel towel rail rather than a ladder, so towels hang against a solid warm face. At 800x500mm it suits a small bathroom or shower room. At ΔT50 it puts out 1,388 BTU (407W); on a lower flow temperature expect less.
Connections are 1/2" BSP and it needs a pair of 15mm valves, sold 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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White flat panel towel radiator with a clean, modern finish
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SPCC steel build with robust powder-coated white gloss
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Vertical mount, ideal for compact bathrooms or cloakrooms
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BS EN442 certified and 10 bar pressure tested
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Compatible with 1/2" UK heating connections
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Radiator valves not included
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5-year manufacturer warranty
BTU values are provided as a range based on ΔT50°C (standard UK rating) and ΔT30°C (lower temperature systems). Low Output: ≤1200 BTU, Medium-High Output: 1201–1700 BTU, High Output: 1701–2100 BTU.
Frequently asked questions
Will it fit a narrow wall?
Yes — 500mm is narrow enough for most awkward walls. The height is where it takes its space: 800mm, so check you have headroom above the skirting and below any shelf or cabinet.
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.
Which radiator valves go with it?
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 white 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.
