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| Manufacturer | Kartell UK Ltd |
|---|---|
| Manufacturer Warranty | 5 Years (T&C’s Apply) |
| Orientation | Vertical Orientation |
| Panel Type | Double Panel Radiator |
| Colour | White |
| Height | 1800 mm |
| Width | 420 mm |
| Heat Output BTU | 6531 |
| Radiator Pipe Centres (mm) (Plus Valves) | 420 |
| Radiator Wall To Pipe Centres (mm) | 60 |
| Radiator Colour | White |
| Model | Aspen White Vertical Double |
| Brand | K-Rad Designer Range |
| Fuel Type | Central Heating |
| Width (mm) | 420 |
| Depth (mm) | 79 |
| Height (mm) | 1800 |
| Manufacturer Part No | ASP18-43VDW |
Home > Radiators > Designer Radiators > Vertical Radiators > Kartell K-Rad Aspen White
The ultimate balance of width and heat performance. This 1800mm vertical double panel radiator uses 14 high-density oval tubes to deliver a massive certified output of 6,531 BTU from just a 420mm footprint. Premium white gloss finish, mild steel construction, and 105mm total wall projection. 5 year Kartell manufacturer guarantee.
At 420mm wide, this radiator hits the perfect sweet spot between the ultra-narrow 300mm and the wider 540mm sizes, fitting easily on standard kitchen pillars and hallway walls.
Thanks to the 14 double oval tubes, it can comfortably heat a large room independently without needing secondary radiators, saving you plumbing costs and wall space.
The bright white gloss powder coat is clean, highly durable, and blends seamlessly with modern minimalist or traditional decor.
Registered directly with Kartell UK, covering all manufacturing defects from date of purchase. Absolute peace of mind for your installation.
The distinctive double oval tube construction provides twice the surface area of a single panel, distributing heat powerfully while only projecting 105mm.
Compatible with air source and ground source heat pumps (outputting ~5,153 BTU at ΔT50) as well as standard gas or oil boilers. TRV ready.
Radiators are manufactured in standard sizes. If you searched for 1800 x 400mm, 1800 x 410mm, 1800 x 415mm or 1800 x 430mm — this 420mm wide radiator is the closest available standard size and will perfectly bridge that gap. Need something slightly narrower? See our 1800 x 300mm White version.
Covered by Kartell UK against all manufacturing defects from date of purchase.
Free delivery available. We aim for 3-5 working days and always try sooner.
Unused items in original packaging accepted within 14 days. Email info@plumbxtra.co.uk.
Valves sold separately. We stock pipe covers, bleed keys, inhibitor. Call 01282 429061.
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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 completely satisfied.
| Specification | Detail |
|---|---|
| Product Name | Kartell K-Rad Aspen Vertical Radiator 1800 x 420mm Double White |
| SKU / Kartell Code | ASP18-43VDW |
| EAN / GTIN | 5055681407421 |
| Height | 1800mm |
| Width | 420mm |
| Depth (Total Wall Distance) | 105mm |
| Orientation | Vertical |
| Colour / finish | White (Gloss) |
| Material | Mild Steel |
| Style | Double Oval Tube — Modern |
| Number of Tubes | 14 (Double Panel) |
| BTU output (Delta T60) | 6,531 BTU |
| Watt output (Delta T60) | 1,914W |
| BTU output (Delta T50) | 5,153 BTU (approx) |
| Heat pump compatible | Yes |
| Fuel type | Central heating (gas, oil, or electric) |
| Pipe centres | 420mm |
| Wall to pipe centres | 63mm |
| Valve connection | 1/2 inch BSP |
| Empty weight | 30.02 kg |
| 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 |
|---|---|---|---|
| 1800 x 300mm | 4,664 | 1,367W | 300mm |
| 1800 x 420mm THIS PRODUCT | 6,531 | 1,914W | 420mm |
| 1800 x 540mm | 8,397 | 2,461W | 540mm |
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. Most modern combi boilers operate at or near this standard.
Heat pump users: At Delta T50, multiply by 0.789 — giving approximately 5,153 BTU.
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 | 63mm |
| Wall projection | 105mm |
| 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 |
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 and must be purchased separately. Because this is a White radiator, we highly recommend White or Chrome TRV valves. Select your pipework configuration below.
When to use: Pipework rises vertically from the floor and connects to the side connections of the radiator.
When to use: Pipework rises from the floor and connects directly to the bottom tappings in a straight vertical line.
When to use: Pipework comes horizontally out of the wall and connects to the side connections.
Looking for the nearest vertical radiator to a specific size? The Kartell K-Rad Aspen 1800mm Double White is the closest match to searches including: 1800x400mm double white vertical radiator, 1800x410mm double panel white, 1800x415mm white designer radiator, 1800x425mm double white radiator, 1800x430mm double vertical white, and 1800x440mm double panel white radiator. Closest Kartell K-Rad Aspen double to 1800x420mm. Kartell Aspen 1800mm tall double gloss white vertical radiator UK.
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