Need Help?
Call an heating expert on 01282 429061
| Manufacturer | Kartell UK Ltd |
|---|---|
| Manufacturer Warranty | 5 Years (T&C’s Apply) |
| Weight | 26.1 |
| Orientation | Vertical Orientation |
| Panel Type | Single Panel Radiator |
| Heat Output BTU | 4309 |
| Radiator Pipe Centres (mm) (Plus Valves) | 510 |
| Radiator Projection (mm) | 52 |
| 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) | 550 |
| Product Type | Designer Radiator |
| Depth (mm) | 52 |
| Height (mm) | 1800 |
| Manufacturer Part No | BOS1800-550A |
Home > Radiators > Designer Radiators > K-Rad Designer Range > Kartell K-Rad Boston Vertical Radiator 1800 x 550mm Single Textured Grey — 4,309 BTU
A single panel vertical designer radiator in matt textured grey finish. 1800mm high, 550mm wide, 52mm deep, delivering 4,309 BTU at Delta T60. 560mm pipe centres. 5 year Kartell UK guarantee. All fixings included.
Verified directly from Kartell UK. 4,000-5,000 BTU — suitable for medium to large rooms. Use the BTU Calculator tab to confirm for your specific room.
560mm pipe centres, 51mm wall to pipe centres. The vertical orientation maximises heat output per millimetre of wall width — perfect where horizontal space is limited.
At 52mm deep this single panel sits close to the wall — one of the slimmest profiles available for a designer vertical radiator.
Sophisticated matt textured grey finish (formerly known as Anthracite) — Kartell renamed the colour in 2025. Works beautifully with both modern and traditional decor.
Kartell's signature flat-tube design offers a premium contemporary aesthetic over standard convector radiators while maintaining excellent heat transfer characteristics.
Weighing 26.1kg. All wall brackets, fixing screws, wall plugs, air vent and blanking plug included. Pressure tested to 10 bar / max working pressure 6 bar. Registered with Kartell UK.
| Specification | Detail |
|---|---|
| Product Name | Kartell K-Rad Boston Vertical Radiator 1800 x 550mm Single Textured Grey — 4,309 BTU |
| SKU / Kartell Code | BOS1800-550A |
| EAN / GTIN | 5060168223913 |
| Height | 1800mm (1813mm actual product height) |
| Width | 550mm |
| Depth (Wall Projection) | 52mm |
| Orientation | Vertical |
| Colour / Finish | Matt Textured Grey (formerly Anthracite) |
| Material | Mild Steel |
| Style | Single Panel — Flat Tube Designer |
| BTU Output (Delta T60) | 4,309 BTU |
| Watt Output (Delta T60) | 1263W |
| Fuel Type | Central heating — gas, oil, or electric |
| Pipe Centres (Tapping Centres) | 560mm |
| Wall to Pipe Centres | 51mm |
| Valve Connection | 1/2 inch BSP |
| Empty Weight | 26.1 kg |
| Pressure Tested | 10 bar |
| Max Working Pressure | 6 bar |
| Fixings Supplied | Yes — all fixings included |
| Manufacturer Guarantee | 5 years — Kartell UK |
| Valves | Not included — sold separately (see Valves tab) |
Understanding Delta T60: All BTU figures quoted at Delta T60 — the European standard assuming mean water temperature 60°C above room temperature.
Professional installation by a Gas Safe registered engineer is strongly recommended for all connections to gas central heating systems.
| Pipe Centres (Tapping Centres) | 560mm |
| Wall to Pipe Centres | 51mm |
| Wall Projection | 52mm |
| Height | 1800mm (1813mm actual) |
| Valve Connection | 1/2 inch BSP — angled, straight, or corner valves |
| Pressure Tested | 10 bar |
| Max Working Pressure | 6 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. For this textured grey radiator we recommend Anthracite/Textured Grey TRV valves. Select your pipework type below.
When to use: Pipework rises vertically from the floor to the side connections. Most common UK installation type.
When to use: Pipework rises directly from the floor in a straight vertical line to the bottom tappings.
When to use: Pipework comes horizontally out of the wall to the side connections of the radiator.
Looking for a 1800mm tall 550mm wide single textured grey vertical radiator? The Kartell K-Rad Boston Vertical Radiator 1800 x 550mm Single Textured Grey — 4,309 BTU (BOS1800-550A) is confirmed direct from Kartell UK. Also found via: 1800 x 550mm single textured grey vertical radiator UK, Kartell Boston 550 single textured grey vertical, BOS1800-550A, 4,309 BTU vertical single textured grey radiator, single panel textured grey vertical radiator 1800mm tall 550mm wide, EAN 5060168223913. Colour aliases: anthracite, textured grey, dark grey, charcoal grey, matt grey.
| Free Delivery | Free express delivery on all orders over £500 to UK mainland addresses |
| Standard Delivery | Charged on orders under £500 — calculated at checkout |
| Delivery Area | UK mainland only. We do not deliver to Northern Ireland, Scottish Highlands, Channel Islands or overseas |
| Lead Time | Maximum 14 working days from order. Call 01282 429061 to confirm availability |
| Finance Options | Spread the cost with Klarna or Clearpay — available at checkout |
| Returns Window | 14 days from receipt of goods |
| 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 | Items must be unused and in original, unopened packaging |
| Faulty Items | Confirmed faulty = 100% of original product value credited |
| Guarantee | 5 year Kartell UK manufacturer guarantee against manufacturing defects |
