550mm Wide Chrome Towel Rail| 500mm Pipe Centre
14 years supplying UK bathrooms, est. February 2012. Free delivery on orders over £200. 5-year manufacturer's warranty on all towel rails.
The 550mm chrome towel rail extends beyond the standard 500mm size to deliver greater bar width and a 500mm pipe centre — useful when the bathroom has a wall run of 550-600mm and higher heat output is needed without stepping up to the full 600mm range. Heights from 600mm to 1800mm cover small supplementary warmers up to 1,836 BTU primary-source installations. Central heating, electric, and dual-fuel; 5-year warranty.
Pipe Centre Note: When installing a 550mm wide chrome towel rail on central heating, your pipework should be set at 500mm centre-to-centre for straight floor-entry valves. For wall-emerging pipework, use angled or corner valve offsets.
Technical Specifications & Multi-ΔT Heat Output Table
All outputs tested to BS EN 442 standards.
| Height (mm) | Total Bars | Bar Layout | ΔT30 (Heat Pump) | ΔT50 (Standard Boiler) | ΔT60 (High Temp) | Pipe Centres |
|---|---|---|---|---|---|---|
| 600mm | 11 | 3+4+4 | 371 BTU / 109 W | 720 BTU / 211 W | 913 BTU / 268 W | 500mm |
| 800mm | 15 | 3+4+8 | 501 BTU / 147 W | 972 BTU / 285 W | 1,232 BTU / 361 W | 500mm |
| 900mm | 16 | 4+4+8 | 501 BTU / 147 W | 972 BTU / 285 W | 1,232 BTU / 361 W | 500mm |
| 1000mm | 19 | 4+4+4+7 | 629 BTU / 184 W | 1,221 BTU / 358 W | 1,548 BTU / 454 W | 500mm |
| 1100mm | 20 | 4+4+5+7 | 539 BTU / 158 W | 1,047 BTU / 307 W | 1,328 BTU / 389 W | 500mm |
| 1200mm | 23 | 4+4+5+10 | 759 BTU / 222 W | 1,474 BTU / 432 W | 1,869 BTU / 548 W | 500mm |
| 1300mm | 25 | 4+5+6+10 | 806 BTU / 236 W | 1,566 BTU / 459 W | 1,986 BTU / 582 W | 500mm |
| 1400mm | 25 | 4+5+6+10 | 946 BTU / 277 W | 1,836 BTU / 538 W | 2,328 BTU / 682 W | 500mm |
| 1500mm | 27 | 4+6+7+10 | 946 BTU / 277 W | 1,836 BTU / 538 W | 2,328 BTU / 682 W | 500mm |
| 1600mm | 27 | 4+6+7+10 | 745 BTU / 218 W | 1,447 BTU / 424 W | 1,835 BTU / 538 W | 500mm |
| 1700mm | 31 | 4+7+8+12 | 745 BTU / 218 W | 1,447 BTU / 424 W | 1,835 BTU / 538 W | 500mm |
| 1800mm | 31 | 4+7+8+12 | 773 BTU / 227 W | 1,501 BTU / 440 W | 1,903 BTU / 558 W | 500mm |
Why Choose a 550mm Width Towel Rail?
The 550mm width suits the upper end of the standard bathroom range — where the available wall section is 550-650mm. The 500mm pipe centre aligns with 500mm stud spacing in some UK construction types. This width provides a meaningful step up in BTU output compared to the 500mm range at equivalent heights, making it the better choice for bathrooms with two external walls or older construction with lower insulation.
- Ideal Room Suitability: Large family bathrooms and ensuites (6-10 m2) where 500mm output is marginal, rooms with two external walls, and bathrooms in older UK properties where an additional 50mm of bar width helps offset poor wall insulation.
- Towel Drying Capacity & Ergonomics: A bath sheet lies completely flat with 25mm clearance each side. In the 1200mm+ height range, two full-size bath towels dry simultaneously on separate bar groups.
- Installation & Wall Space Considerations: The 500mm pipe centre suits bathrooms with 500mm stud spacing. Allow approximately 650mm total wall clearance. The 550mm width is also used in some bespoke bathroom furniture where a niche is built to exactly 550mm.
Explore Alternative Sizes & Finishes
If 550mm isn't the exact fit, explore related options:
- Adjacent Widths: Compare with our 500mm Wide Chrome Towel Rails or step up to 600mm Wide Chrome Towel Rails.
- Alternative Finishes in 550mm Width:
Key Installation & Accessory Compatibility
- Pipe Centre Alignment: Fixed at 500mm across all heights in this width range.
- Required Valve Hardware: Pair with our Chrome Radiator Valves — straight valves for floor pipework or angled/corner valves for wall pipework.
- Dual Fuel Conversion: Use your rail in summer with a Dual Fuel Kit and Heating Element.
Understanding the ΔT30 / ΔT50 / ΔT60 Output Columns
The three output columns in the table above correspond to different heating system types. ΔT50 is the UK standard (BS EN 442) used by most gas boilers; ΔT30 applies to heat pump systems running at lower flow temperatures; ΔT60 applies to older high-temperature gravity-fed systems. For a full explanation of how these figures work, how to match them to your system, and how to calculate the exact BTU your room needs, see our Towel Rail Heat Output & BTU Calculator Guide.
Frequently Asked Questions
Q: What is the pipe centre for a 550mm towel rail?
A: The standard pipe centre for a 550mm wide chrome towel rail is 500mm, leaving 25mm clearance on each side for valve connections.
Q: What is the advantage of a 550mm over a 500mm towel rail?
A: The 550mm provides 50mm more bar width, a 500mm pipe centre (vs 450mm), and generally higher BTU output at equivalent heights. If your pipework is already at 500mm centres or your wall run is 550-650mm, the 550mm is the more precise fit.
Q: Can a 550mm towel rail heat a large family bathroom on its own?
A: For a large family bathroom of 7-10 m2 with one external wall and average insulation, the 1400mm height (1,836 BTU / 538W) is sufficient as the sole heat source. For rooms with two external walls, opt for 1600mm or 1800mm. Heat pump systems should use the DT30 column.
