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Quick BTU calculator

Enter your room measurements for an estimated heating requirement. Compare radiators without leaving this page.

Starting assumptions: two adjacent outside walls, 1.5m² low-E glazing, insulated cavity walls, ground floor and insulated loft. Check these against your room.

Check or change room assumptions

U-values describe heat passing through a surface; use known building values where available. −3°C outdoors, 10°C below and the default U-values are preliminary assumptions, not a location survey. Unheated lofts use the outdoor temperature; heated floors/ceilings use U 1.36/1.62 and the adjacent-room temperature.

Preliminary rectangular-room estimate, not an installer’s heat-loss survey. It excludes detailed thermal bridging, ground/loft modelling and ventilation-system design. Confirm the room heat loss and radiator output at your heating-system temperatures before ordering.

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350mm wide black towel radiators

Compare 350mm-wide black towel radiators with 300mm pipe centres. Choose a height that fits your wall and check the listed heat output for your room.

350mm wide300mm pipe centres5-year radiator warranty
Quick BTU calculatorEstimate your room’s heat requirement here, then compare the radiators below.

Discover our range of 350mm wide black towel radiators, offering the ideal balance between compact dimensions and increased towel hanging capacity. With more surface area than ultra-slim towel rails, these models are a popular choice for family bathrooms, larger ensuites and busy households that require additional drying space. Designed to provide efficient bathroom heating and practical towel warming, each radiator is finished in a stylish matte black coating that complements contemporary interiors.

Need to calculate the perfect heat output for your bathroom size?
Calculate your BTU requirements



350mm (5)
600mm (1)
800mm (1)
1000mm (1)
1200mm (1)
1400mm (1)
FB-350
813 (1)
1099 (1)
1384 (1)
1669 (1)
1869 (1)
Price ▼

5 of 5 radiators · Available items first

Product Compare0
350mm Wide 600mm High Black Towel Radiator Flat Narrow 350mm Wide 600mm High Black Towel Radiator Flat Narrow
-11 %
350mm Wide 600mm High Black Towel Radiator Flat Narrow
This matt black towel radiator measures 350 mm wide × 600 mm high.Size & constructionWidth350 mmHeight600 mmFinishMatt blackMaterialMild steelDesignFlat / straightTowel slots2Bar configuration3 + 4 + 4 = 11 barsHeat output & fitting dimensionsListed heat output813 BTU/h · 239 WPipe centres30..
£66.99 £74.99
Ex Tax:£55.83
Question
350mm Wide 800mm High Black Towel Radiator Flat Narrow 350mm Wide 800mm High Black Towel Radiator Flat Narrow
-9 %
350mm Wide 800mm High Black Towel Radiator Flat Narrow
This matt black towel radiator measures 350 mm wide × 800 mm high.Size & constructionWidth350 mmHeight800 mmFinishMatt blackMaterialMild steelDesignFlat / straightTowel slots2Bar configuration3 + 4 + 8 = 15 barsHeat output & fitting dimensionsListed heat output1,099 BTU/h · 323 WPipe centres..
£67.99 £74.99
Ex Tax:£56.66
Question
350mm Wide 1000mm High Black Towel Radiator Flat Narrow Slim 350mm Wide 1000mm High Black Towel Radiator Flat Narrow Slim
-14 %
350mm Wide 1000mm High Black Towel Radiator Flat Narrow Slim
This black towel radiator measures 350 mm wide × 1,000 mm high.Size & constructionWidth350 mmHeight1,000 mmFinishBlackMaterialMild steelDesignFlat / straightTowel slots3Bar configuration4 + 4 + 4 + 7 = 19 barsHeat output & fitting dimensionsListed heat output1,384 BTU/h · 406 WPipe centres30..
£76.99 £89.99
Ex Tax:£64.16
Question
350mm Wide 1200mm High Black Towel Radiator Flat Narrow Slim 350mm Wide 1200mm High Black Towel Radiator Flat Narrow Slim
-11 %
350mm Wide 1200mm High Black Towel Radiator Flat Narrow Slim
This black towel radiator measures 350 mm wide × 1,200 mm high.Size & constructionWidth350 mmHeight1,200 mmFinishBlackMaterialMild steelDesignFlat / straightTowel slots3Bar configuration4 + 4 + 5 + 10 = 23 barsHeat output & fitting dimensionsListed heat output1,669 BTU/h · 490 WPipe centres3..
£84.99 £94.99
Ex Tax:£70.83
Question
350mm Wide 1400mm High Black Towel Radiator Flat Narrow Slim 350mm Wide 1400mm High Black Towel Radiator Flat Narrow Slim
350mm Wide 1400mm High Black Towel Radiator Flat Narrow Slim
This black towel radiator measures 350 mm wide × 1,400 mm high.Size & constructionWidth350 mmHeight1,400 mmFinishBlackMaterialMild steelDesignFlat / straightTowel slots3Bar configuration4 + 5 + 6 + 10 = 25 barsHeat output & fitting dimensionsListed heat output1,869 BTU/h · 548 WPipe centres3..
£94.99
Ex Tax:£79.16
Question
Showing 1 to 5 of 5 (1 Pages)

Help choosing your radiator

Useful guides for the sizes and finishes you’re browsing.

Choosing a narrow radiator

Compare sizes in chrome and black for cloakrooms and restricted wall space.

Read guide

300mm or 350mm wide?

Compare connection centres, usable space and both finishes.

Read guide

Choose a useful height

Consider comfortable reach, hanging gaps and access to controls.

Read guide

Compare 350mm-wide black towel radiators with 300mm pipe centres. Choose a height that fits your wall and check the listed heat output for your room.

Listed heights in this collection range from 600mm to 1400mm; check availability on each product. Measure the wall between nearby fittings and leave clearance for the valves. Matching the radiator width alone does not guarantee that it will fit existing pipework.

Wall brackets, an air vent and a blanking plug are included with towel radiators. Valves are optional. Ask your installer to confirm the connections and any electric or dual-fuel requirements.

Frequently Asked Questions – 350mm wide black towel radiators

CAN THIS TOWEL RAIL BE UTILISED IN ANY SPACE?

Indeed, it has been designed for versatility and can find its place in kitchens, baths, or even cloakrooms.

WHAT QUALITY STANDARDS DOES THIS TOWEL RAIL MEET?

FINISH OF THE TOWEL RAIL?

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