This black Arvani measures 1200x500mm and mounts vertically, which makes it a straightforward fit for a big bathroom or a bathroom with an outside wall. Heat output is 2,127 BTU at ΔT50 — 623W in metric.
Plumbing is standard: 1/2" inlets and outlets, plus a pair of 15mm valves.
Specification
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Size: 1200x500mm
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BTU: 2127 - 1172
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Watt Output: 623 - 343W
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Recommended Area: Up to 7m²
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Matt black powder-coated flat panel design
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Durable low carbon steel, tested to resist corrosion
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Perfect for high-use bathrooms with larger towel needs
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Vertical mount, BS EN442 certified, pressure tested to 10 bar
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1/2" UK standard fittings
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Valves sold separately
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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?
At 500mm across and 1200mm 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.
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 1200x500mm and 2,127 BTU, so there is a smaller and a larger option either side of it.
What valves do I need?
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 black if you want them to disappear against the rail.
Will the finish mark?
Powder coating is hard wearing and handles steam well. Clean the black finish with warm water and a soft cloth — no scouring pads, and nothing with bleach in it.
- Type: Heated Towel Rail
- Width: 500mm
- Height: 1200mm
- Panels: Single Panel
- Heat output: High (1701–2100 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.
Questions people ask
What does BTU mean?
Which valves do I need?
Can I use it in summer?
What size rail do I need?
Will it match my brushed brass taps?
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