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| Manufacturer | Kartell UK Ltd |
|---|---|
| Manufacturer Warranty | 5 Years (T&C’s Apply) |
| Weight | 20.28 |
| Orientation | Vertical Orientation |
| Panel Type | Single Panel Radiator |
| Height | 1800 mm |
| Width | 1040 mm |
| Heat Output BTU | 3231 |
| Radiator Pipe Centres (mm) (Plus Valves) | 370 |
| Radiator Wall To Pipe Centres (mm) | 50 |
| Radiator Colour | Textured Grey |
| Model | Boston Anthracite |
| Brand | K-Rad Designer Range |
| Fuel Type | Central Heating |
| Width (mm) | 410 |
| Depth (mm) | 52 |
| Height (mm) | 1800 |
| Manufacturer Part No | BOS1800-410A |
Home > Radiators > Designer Radiators > Vertical Radiators > KRAD Boston 1800 x 410mm Textured Grey Single
A premium matt textured grey vertical designer radiator (also known as anthracite) delivering 3,231 BTU from a slim 420mm body. 1800mm height, single panel construction, 52mm depth, 20.28kg. 5 year Kartell UK manufacturer guarantee. All fixings included.
If you have a tall hallway wall, narrow living-room recess or modern kitchen feature wall and want maximum design impact, the Kartell K-Rad Boston 1800 x 420mm Anthracite Vertical Single Designer Radiator is the floor-to-ceiling statement piece you’re looking for. The slim 420mm body delivers a powerful 3,231 BTU (947W) from almost no floor space. The matt textured grey finish gives the full-height profile real designer presence. SKU: BOS1800-410A.
At 1813mm overall and just 420mm wide, this is the tallest narrow-width Boston in anthracite — the floor-to-ceiling proportions transform a hallway into a serious designer focal point.
The 200mm extra height over the 1600mm version delivers 334 more BTU from exactly the same wall width — ideal where floor space is precious but heat demand is real.
The matt textured grey finish is the natural choice for industrial-style hallways, exposed-brick living rooms, and modern kitchens with concrete-effect tiles.
The full-height single panel design extracts heat efficiently at lower flow temperatures, making the Boston suitable for both gas central heating and modern heat pump systems.
Identical dimensions to the white BOS1800-410W means you can run anthracite in main living spaces and white in bedrooms while keeping a unified designer language.
Full coverage on the genuine 5 year guarantee — registered direct with Kartell UK in your name. This is the original Kartell-branded Boston, not a re-branded copy.
| Specification | Detail |
|---|---|
| Product Name | Kartell K-Rad Boston 1800 x 410mm Textured Grey Single Vertical Designer Radiator |
| SKU / Kartell Code | BOS1800-410A |
| EAN / GTIN-13 | 5060168223838 |
| Height | 1800mm |
| Width | 420mm (catalogue size 410mm) |
| Depth | 52mm (single panel) |
| Weight | 20.28kg |
| Orientation | Vertical |
| Colour / Finish | Textured Grey / Anthracite (Matt Powder Coat, RAL ~7016) |
| Material | Mild Steel |
| Panel Type | Single Panel — Designer Flat Tube |
| Number of Tubes | 7 |
| BTU Output (Delta T60) | 3,231 BTU |
| Watt Output (Delta T60) | 947W |
| Fuel Type | Central heating — gas, oil, electric or heat pump |
| Pipe Centres | 420mm |
| Wall to Pipe Centres | 50mm |
| Valve Connection | 1/2 inch BSP |
| Max Working Pressure | 6 bar (pressure tested to 10 bar) |
| Fixings Supplied | Yes — all wall fixings included |
| Manufacturer Guarantee | 5 years — Kartell UK |
| Valves Included | Not included — sold separately (see Valves tab) |
All outputs quoted at Delta T60 — the European standard assuming 80°C flow / 60°C return in a 20°C room.
Watch our step-by-step guide. All central heating connections must be made by a qualified heating engineer.
| Pipe Centres | 420mm |
| Wall to Pipe Centres | 50mm |
| Wall Projection | 52mm |
| Valve Connection | 1/2 inch BSP — angled, straight or corner |
| Max Working Pressure | 6 bar (pressure tested to 10 bar) |
| Compatible Systems | Sealed and open vented — gas, oil, electric, heat pump |
| Fixings Supplied | Yes — wall brackets, screws, plugs, air vent, blanking plug |
Valves are not included and must be purchased separately. We recommend matching Kartell K-Design Textured Grey TRV twin packs to complement this radiator perfectly. Select your pipework type below.
When to use: Pipework rises vertically from the floor and connects to the side tappings of the radiator. This is the most common UK installation type for vertical radiators.
When to use: Pipework rises directly from the floor into the bottom tappings in a straight vertical line.
When to use: Pipework rises behind the radiator and connects to the bottom tappings at an angle, giving a clean concealed finish.
ⓘ Unsure which type? Call 01282 429061 Monday to Friday and our team will advise.
The Boston 1800 x 410mm has an overall height of approximately 1813mm and physical width of 420mm. Allow at least 100mm clearance from the floor for valves and pipework, and 50–60mm clearance either side. Total minimum wall height needed is approximately 1950mm.
Kartell describe this finish officially as Textured Grey, which is what most UK plumbers and merchants call “anthracite”. The actual finish is a deep matt charcoal grey with a fine textured powder coat — closest to RAL 7016. Pairs especially well with warm whites, oak flooring and brass fittings.
For a small-to-medium UK living room or hallway of 12–14m² with average insulation, 3,231 BTU is generally sufficient as the sole heat source. Use the BTU Calculator above to check against your exact room dimensions and insulation level.
No — valves are sold separately. We recommend matching Kartell K-Design Textured Grey TRV twin packs for tonal consistency, or polished chrome valves for a contrast accent. See the Valves tab above.
Yes — this is the original Kartell-branded Boston (BOS1800-410A, EAN 5060168223838) supplied through Kartell UK’s authorised distribution. You get the genuine Kartell guarantee, registered in your name.
Yes — the Boston operates well at lower flow temperatures typical of modern air-source heat pump systems. At heat pump flow temperatures the BTU output will be lower than the quoted Delta T60 figure — call 01282 429061 for sizing advice.
Looking for a tall slim anthracite vertical radiator? The Kartell K-Rad Boston 1800 x 420mm Anthracite Vertical Single Designer Radiator (BOS1800-410A) delivers 3,231 BTU from a 420mm wide single panel — the tallest narrow-width option in anthracite. Closest match for the following searches: 1800 x 400mm anthracite vertical radiator, 1800 x 420mm anthracite vertical radiator, 1800 x 430mm grey vertical radiator, 1820 x 410mm tall anthracite radiator, 1850 x 410mm anthracite radiator, full height anthracite vertical radiator 1800mm, tall narrow grey radiator 410mm, Kartell Boston 1800 410 textured grey, BOS1800-410A, EAN 5060168223838. Also commonly searched as: tall narrow anthracite single panel radiator 1800, designer grey vertical radiator UK 1800mm, anthracite flat-tube radiator 52mm depth 1800mm, 180cm anthracite vertical radiator single panel, dark grey tall vertical radiator 1800mm.
| Free Delivery | Free express delivery on orders over £500 to UK mainland addresses |
| Standard Delivery | Charged at £30 inc VAT on orders under £500 — calculated at checkout |
| Delivery Area | UK mainland only — excludes Northern Ireland, Scottish Highlands, Channel Islands and overseas |
| Lead Time | Maximum 14 working days from order. Call 01282 429061 to confirm current availability |
| Despatch Confirmation | Email confirmation sent when your order is despatched |
| Delivery Address | We deliver to your registered billing address only |
| Finance Options | Spread the cost with Klarna or Clearpay — available at checkout |
| Returns Window | 14 days from receipt of goods |
| How to Return | Request a returns number in writing before sending items back. Call 01282 429061 or email us |
| Return Postage | Cost of returning goods is borne by the customer. Original delivery charges are non-refundable |
| Restocking Charge | A 25% restocking charge may apply to non-faulty returns |
| Condition of Return | Items must be unused and in original, unopened packaging |
| Refund | Upon receipt and inspection a full refund, exchange or credit note will be issued |
| Faulty Items | Sent to manufacturer for testing. If confirmed faulty, 100% of the original product value will be credited |
| Guarantee | This radiator carries a 5 year Kartell UK manufacturer guarantee against manufacturing defects |
