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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.

Need help choosing? Contact us →

450mm wide black towel radiators

Compare 450mm-wide black towel radiators with 400mm pipe centres. Choose a height that fits your wall and check the listed heat output for your room.

450mm wide400mm pipe centres5-year radiator warranty
Quick BTU calculatorEstimate your room’s heat requirement here, then compare the radiators below.


450mm (8)
600mm (1)
800mm (1)
1000mm (1)
1200mm (1)
1400mm (1)
1600mm (1)
1800mm (1)
450/Black
FB-45-100
FB-45-120
FB-45-140
FB-45-160
FB-45-180
FB-45-60
FB-45-80
Price ▼

8 of 8 radiators · Available items first

Product Compare0
450mm Wide 600mm High Black Towel Radiator Flat 450mm Wide 600mm High Black Towel Radiator Flat
450mm Wide 600mm High Black Towel Radiator Flat
This black towel radiator measures 450 mm wide × 600 mm high.Size & constructionWidth450 mmHeight600 mmFinishBlackMaterialSteelDesignFlat / straightTowel slots2Bar configuration3 + 4 + 4 = 11 barsHeat output & fitting dimensionsListed heat output985 BTU/h · 289 WPipe centres400 mmWall to pip..
£44.99
Ex Tax:£37.49
Question
450mm Wide 800mm High Black Towel Radiator Flat 450mm Wide 800mm High Black Towel Radiator Flat
Out Of Stock
450mm Wide 800mm High Black Towel Radiator Flat
This black towel radiator measures 450 mm wide × 800 mm high.Size & constructionWidth450 mmHeight800 mmFinishBlackMaterialSteelDesignFlat / straightTowel slots2Bar configuration3 + 4 + 8 = 15 barsHeat output & fitting dimensionsListed heat output1,275 BTU/h · 374 WPipe centres400 mmWall to p..
£43.99
Ex Tax:£36.66
Question
450mm Wide 1000mm High Black Towel Radiator Flat 450mm Wide 1000mm High Black Towel Radiator Flat
450mm Wide 1000mm High Black Towel Radiator Flat
This black towel radiator measures 450 mm wide × 1,000 mm high.Size & constructionWidth450 mmHeight1,000 mmFinishBlackMaterialSteelDesignFlat / straightTowel slots2Bar configuration4 + 4 + 4 + 7 = 19 barsHeat output & fitting dimensionsListed heat output1,623 BTU/h · 476 WPipe centres400 mmW..
£50.99
Ex Tax:£42.49
Question
450mm Wide 1200mm High Black Towel Radiator Flat 450mm Wide 1200mm High Black Towel Radiator Flat
450mm Wide 1200mm High Black Towel Radiator Flat
This black towel radiator measures 450 mm wide × 1,200 mm high.Size & constructionWidth450 mmHeight1,200 mmFinishBlackMaterialSteelDesignFlat / straightTowel slots2Bar configuration4 + 4 + 5 + 10 = 23 barsHeat output & fitting dimensionsListed heat output1,798 BTU/h · 527 WPipe centres400 mm..
£54.99
Ex Tax:£45.83
Question
450mm Wide 1400mm High Black Towel Radiator Flat 450mm Wide 1400mm High Black Towel Radiator Flat
450mm Wide 1400mm High Black Towel Radiator Flat
This black towel radiator measures 450 mm wide × 1,400 mm high.Size & constructionWidth450 mmHeight1,400 mmFinishBlackMaterialSteelDesignFlat / straightTowel slots3Bar configuration4 + 5 + 6 + 10 = 25 barsHeat output & fitting dimensionsListed heat output2,207 BTU/h · 647 WPipe centres400 mm..
£56.99
Ex Tax:£47.49
Question
450mm Wide 1600mm High Flat Chrome Towel Radiator
Out Of Stock
450mm Wide 1600mm High Flat Chrome Towel Radiator
This chrome towel radiator measures 450 mm wide × 1,600 mm high.Size & constructionWidth450 mmHeight1,600 mmFinishChromeMaterialSteelDesignFlat / straightTube arrangement4 + 5 + 5 + 5 + 7 = 26 tubesTowel slots4Heat output & fitting dimensionsListed heat output2,230 BTU/hPipe centres400 mmWal..
£61.99
Ex Tax:£51.66
Question
450mm Wide 1800mm High Black Towel Radiator Flat
Out Of Stock
450mm Wide 1800mm High Black Towel Radiator Flat
This black towel radiator measures 450 mm wide × 1,800 mm high.Size & constructionWidth450 mmHeight1,800 mmFinishBlackMaterialSteelDesignFlat / straightTube arrangement4 + 5 + 5 + 5 + 12 = 31 tubesTowel slots4Heat output & fitting dimensionsListed heat output2,840 BTU/h · 833 WPipe centres40..
£62.99
Ex Tax:£52.49
Question
Black Heated Towel Radiator 450mm Wide Black Heated Towel Radiator 450mm Wide
Out Of Stock
Black Heated Towel Radiator 450mm Wide
This black towel radiator is 450 mm wide, with the available heights and outputs listed below.Size & constructionWidth450 mmHeightChoose an available height; see the table belowFinishBlackTube diameter22 mmHeat output & fitting dimensionsPipe centres400 mmCompare the listed output at your he..
£46.99
Ex Tax:£39.16
Question
Showing 1 to 8 of 8 (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

Choose a useful height

Consider comfortable reach, hanging gaps and access to controls.

Read guide

Will it heat the room?

Check the exact model’s output against your room’s heating requirement.

Read guide

Compare 450mm-wide black towel radiators with 400mm 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 1800mm; 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.

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