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| Manufacturer | Kartell UK Ltd |
|---|---|
| Manufacturer Warranty | 5 Years (T&C’s Apply) |
| Orientation | Vertical Orientation |
| Panel Type | Single Panel Radiator |
| Colour | White |
| Height | 1800 mm |
| Width | 420 mm |
| Heat Output BTU | 3368 |
| Radiator Pipe Centres (mm) (Plus Valves) | 420 |
| Radiator Wall To Pipe Centres (mm) | 40 |
| Radiator Colour | White |
| Model | Aspen White Vertical Single |
| Brand | K-Rad Designer Range |
| Fuel Type | Central Heating |
| Width (mm) | 420 |
| Depth (mm) | 55 |
| Height (mm) | 1800 |
| Manufacturer Part No | ASP18-43VSW |
Home > Radiators > Designer Radiators > Vertical Radiators > Kartell K-Rad Aspen White
One of the UK's best-selling oval tube designer vertical radiators. Gloss white finish, mild steel construction, 55mm wall projection. 5 year Kartell manufacturer guarantee. All fixings included.
The distinctive oval tube construction gives better heat circulation, a slimmer 55mm profile, and a far more premium aesthetic than standard flat panel radiators at similar price points.
At 1800mm tall and just 420mm wide it fits neatly in narrow hallways, beside doors, between windows, and in bathrooms where a conventional horizontal radiator simply will not fit.
Heat output tested at Delta T60. This is the actual certified output — not an estimated figure. Suitable for large bathrooms, single bedrooms, and hallways up to approximately 42-52 sq ft.
One of the strongest guarantees available at this price point. Registered directly with Kartell UK and covers all manufacturing defects from date of purchase.
The oval tube design heats quickly and retains heat efficiently. Compatible with thermostatic radiator valves (TRVs) for room-by-room control, and suitable for air source and ground source heat pump systems.
Wall brackets, fixing screws, wall plugs, air vent and blanking plug all supplied. Add valves and it is ready to hang. Valves sold separately — see the Valves tab above.
Radiators are manufactured in standard sizes. If you searched for 1800 x 400mm, 1800 x 405mm, 1800 x 410mm or 1800 x 415mm — or 1800 x 425mm, 1800 x 430mm, 1800 x 435mm, 1800 x 440mm, 1800 x 450mm, 1800 x 460mm, 1800 x 470mm or 1800 x 480mm — this 420mm wide radiator is the closest available standard size and will very likely be the perfect fit. The 420mm pipe centres suit the vast majority of standard UK central heating pipework. Need something wider? See our 1800 x 540mm version (4,309 BTU).
Covered by Kartell UK against all manufacturing defects. One of the strongest guarantees available at this price point.
Free on orders over £500. We aim for 3-5 working days and always try to get it to you sooner.
Unused items in original packaging accepted within 14 days. Email info@plumbxtra.co.uk to arrange.
Valves sold separately. We also stock pipe covers, bleed keys, and inhibitor fluid. Call 01282 429061.
UK heating specialist. VAT registered. Genuine products sourced direct. Rated on Trustpilot.
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Inspect your order before signing for it. Any damage, shortages, or incorrect items must be reported within 48 hours of receipt. We cannot process claims outside this timeframe. Retain all original packaging until you are completely satisfied.
| Specification | Detail |
|---|---|
| Product Name | Kartell K-Rad Aspen Vertical Radiator 1800 x 420mm Single White |
| SKU | ASP18-43VSW |
| EAN / GTIN-13 | 5055681407445 |
| Height | 1800mm |
| Width | 420mm |
| Depth | 55mm |
| Orientation | Vertical |
| Colour / finish | Gloss White |
| Material | Mild Steel |
| Style | Oval tube — Modern |
| BTU output (Delta T60) | 3,368 BTU |
| Watt output (Delta T60) | 987W |
| BTU output (Delta T50) | 2,657 BTU (approx) |
| Heat pump compatible | Yes |
| Fuel type | Central heating (gas, oil, or electric) |
| Pipe centres | 420mm |
| Wall to pipe centres | 51mm |
| Valve connection | 1/2 inch BSP |
| Empty weight | 16.8kg |
| Max working pressure | 7.8 bar |
| Fixings supplied | Yes — all fixings included |
| Manufacturer guarantee | 5 years — Kartell UK |
| Valves | Not included — sold separately (see Valves tab) |
| Size (H x W) | BTU (Delta T60) | Watts | Pipe Centres | SKU |
|---|---|---|---|---|
| 1800 x 300mm | 2,392 | 701W | 300mm | ASP18-31VSW |
| 1800 x 420mm THIS PRODUCT | 3,368 | 987W | 420mm | ASP18-43VSW |
| 1800 x 540mm | 4,309 | 1,263W | 540mm | ASP18-55VSW |
Also available in textured grey — view full vertical radiator range.
Need a technical data sheet or dimension drawing? Email info@plumbxtra.co.uk.
All radiator heat outputs are quoted at Delta T60 — the European standard for testing, which assumes a mean water temperature 60°C above room temperature (typically flow 80°C, return 60°C, room 20°C). Most modern combi boilers run at or near these temperatures. If your system runs cooler, the actual output will be lower.
Heat pump users: Heat pumps typically run at lower flow temperatures (35-55°C). At Delta T50, multiply the BTU figure by 0.789 — giving approximately 2,657 BTU for this radiator. At Delta T41, multiply by 0.638 — giving approximately 2,149 BTU. Always size up when installing on a heat pump system.
Watch our step-by-step installation guide below. Professional installation by a Gas Safe registered engineer is strongly recommended for all connections to gas central heating systems.
| Pipe centres | 420mm |
| Wall to pipe centres | 51mm |
| Wall projection | 55mm |
| Valve connection | 1/2 inch BSP — angled, straight, or corner valves |
| Max working pressure | 7.8 bar |
| Compatible systems | Sealed and open vented — gas, oil, electric, heat pump |
| Fixings supplied | Yes — wall brackets, screws, plugs, air vent, blanking plug |
| Valves | Not included — see Valves tab |
Heat pump compatible: At Delta T50 flow temperatures, output is approximately 2,657 BTU. Always size correctly for heat pump installations — use the BTU Calculator tab.
Need the installation manual? Contact our team at info@plumbxtra.co.uk or call 01282 429061 and we will send it straight over.
Valves are not included with this radiator and must be purchased separately. This radiator uses standard 1/2 inch BSP connections. Select your pipework configuration below to find the right valve type.
When to use: Pipework rises vertically from the floor and connects to the side connections of the radiator. The valve turns 90 degrees to make the connection.
This is the most common configuration in UK homes. If you are unsure which valve type you need, angled valves are the most likely correct choice.
Pipe size: Standard 15mm angled valves fit the 1/2 inch BSP connections on this radiator.
When to use: Pipework rises vertically from the floor and connects directly to the bottom tappings of the radiator without turning.
Used where the pipework exits the floor directly beneath the radiator and the valve connects in a straight vertical line.
Pipe size: Standard 15mm straight valves fit the 1/2 inch BSP connections on this radiator.
When to use: Pipework comes horizontally out of the wall and connects to the side connections of the radiator. The corner valve redirects the wall pipe to the radiator.
Common in apartments, first-floor rooms, and properties where pipework runs through wall chases.
Pipe size: Standard 15mm corner valves fit the 1/2 inch BSP connections on this radiator.
View our full radiator accessories range or call 01282 429061 for expert valve advice.
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