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| Manufacturer Warranty | 5 Years (T&C’s Apply) |
|---|---|
| Orientation | Vertical Orientation |
| Colour | White |
| Height | 1800 mm |
| Width | 425 mm |
| Heat Output Watts | 2036 |
| Heat Output BTU | 6948 |
| Radiator Pipe Centres (mm) (Plus Valves) | approx. 425 |
| Radiator Projection (mm) | 130-140 |
| Radiator Wall To Pipe Centres (mm) | 30-40 |
| Manufacturer | Kartell |
| Manufacturer Part No | LK31800425 |
Double-height spaces play by different rules, and this 1800mm white three-column was built for them. 6,948 BTU (2,036W) at Delta T60 from a 425mm slot makes it the strongest tall radiator most stair voids, mezzanines and galleried landings will ever need - output that two-column verticals simply cannot reach, from nine sections running 100mm deep.
Kartell's laser-welded mild steel construction carries a 10 bar pressure test and five year guarantee, with gloss white powder coat that stays bright against tall expanses of wall. Wall brackets and fixings included; consider the optional floor feet where fixing high on a stairwell wall is awkward.
Range photography is for illustration - the number of sections varies with the size ordered. This listing is the 1800 x 425mm 3 column model with 9 sections. Dimension drawing included in the gallery.
Rooms are not heated by guesswork - match the radiator's output to the space it serves.
| Output at Delta T60 (Kartell published) | 6,948 BTU / 2,036W |
|---|---|
| Output at Delta T50 (calculated, EN442 factor) | approx. 5,482 BTU / 1,607W |
| Typical room coverage | roughly 12-17 square metres in an average UK home |
Coverage is a guide only - insulation, glazing area and ceiling height change the sums. Use a BTU calculator with your room dimensions before ordering, and size up slightly for north-facing or draughty rooms.
| Range | Kartell K-Rad Laser Klassic |
|---|---|
| Type | 3 column radiator (vertical) |
| Height x Width | 1800 x 425mm |
| Column depth | 100mm (allow 130-140mm wall to front face) |
| Sections | 9 |
| Heat output (Delta T60) | 6,948 BTU / 2,036W |
| Heat output (Delta T50, calculated) | approx. 5,482 BTU / 1,607W |
| Finish | Gloss white powder coat over mild steel |
| Material | Laser-welded mild steel |
| Tapping centres | approx. 425mm - valves at bottom opposite ends |
| Weight (empty) | 39.9kg |
| Pressure tested | 10 bar |
| Guarantee | 5 years (register with Kartell UK) |
| In the box | Radiator, wall brackets, fixing kit, instructions |
| Valves | Not included - sold separately |
Installation is a routine job for any plumber or competent DIYer used to hanging radiators.
Valves are not included. You need a pair: one wheelhead or thermostatic (TRV) valve plus one lockshield. Angled valves suit pipework rising from the floor; straight valves suit wall-fed pipe runs.
See our radiator valves range - the Kartell TRV and lockshield twin packs pair perfectly.
Orders are picked from live UK stock. Radiators are palletised or double-boxed and checked before dispatch - please inspect on arrival and note any transit damage with the driver.
