The Kartell K-Rad Kompact D605K is a Type 22 double panel, double convector radiator, 600 × 500 mm, giving 917 W (3130 BTU/h) at ΔT50. Two panels, each backed by its own bank of convector fins, fill a 105 mm case: 917 W against 708 W for a Type 21 the same size. Nett weight is 16.9 kg and it holds 2.95 litres of system water.
Type 22 double panel600 × 500 × 105 mm917 W at ΔT50EN 442 testedWhite enamel RAL 901610-year guarantee
3130 BTU/h
Output at ΔT50 — 917 W
16.9 kg
Nett weight — holds 2.95 l
EN 442
Tested and certified
10 years
Manufacturer guarantee
Applications & suitability
Where it goes
Wall-hung on a sealed or open-vented wet heating system, fixed no lower than 100 mm off the finished floor. The 600 mm height clears a standard skirting and sits under most window boards.
Typical job
A room needing roughly 917 W on a 70 °C mean water temperature, or 1175 W where the system runs at 80 °C. Straight swap for a tired 600 × 500 panel of the same size.
Works with / replaces
Pipe centres are 545 mm with a wall-to-centre of 82.5 or 97.5 mm, so it lines up with most existing 600 mm-high panels. Case depth is 105 mm against 70 mm for a Type 21 and 160 mm for a Type 33.
When not to choose this
The 917 W figure is at ΔT50. Run a heat pump at low flow temperatures and it falls hard — Kartell’s own correction factor at ΔT30 is 0.515, so you would get about 472 W from this radiator. Size at the ΔT you will actually run, and step up to a Type 33 where the size allows, or split the load across two radiators.
Key specifications
| Brand |
Kartell |
| Model |
K-Rad Kompact D605K |
| Radiator type |
Type 22 — double panel, double convector |
| Heat output |
| Output at ΔT50 |
917 W (3130 BTU/h) |
| Output at ΔT60 |
1175 W (4010 BTU/h) |
| Size and weight |
| Dimensions (H × W × D) |
600 × 500 × 105 mm |
| Centre distance |
545 mm |
| Wall to centre |
82.5 or 97.5 mm |
| Weight |
16.9 kg |
| Water content |
2.95 l |
| Build and rating |
| Max working pressure |
10 bar |
| Max working temperature |
120 °C |
| Finish |
White enamel, RAL 9016 |
| Standard |
EN 442 |
| Warranty |
10 years |
Installation & compatibility
Fix no lower than 100 mm from the finished floor. Allow 35 mm from the wall to pipe centre for a manual valve, or 45 mm for a TRV. Kartell requires the system to be cleansed and dosed with inhibitor to BS 7593:2019 — skipping it invalidates the guarantee, which covers product replacement only. Leave the protective packaging on until the radiator is fixed and the tappings are cut.
Related & next steps
Need more output?
The Type 33 at the same 600 × 500 mm gives 1257 W at ΔT50, in a 160 mm case.
View Type 33
Tight on space?
The Type 21 is 70 mm deep and gives 708 W at ΔT50 — slimmer, but less heat.
View Type 21
Other sizes
Type 22 runs 300–900 mm high and up to 3000 mm wide, from 420 W to 5504 W at ΔT50.
Browse radiators
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