Kartell K-Rad Type 22 Double Panel Double Convector Radiator 400mm x 400mm
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The Kartell K-Rad Kompact D404K is a Type 22 double panel, double convector radiator, 400 × 400 mm, giving 533 W (1819 BTU/h) at ΔT50. Two panels, each backed by its own bank of convector fins, fill a 105 mm case: 533 W against 413 W for a Type 21 the same size. Nett weight is 9.16 kg and it holds 1.64 litres of system water.
Applications & suitability
Key specifications
| Brand | Kartell |
| Model | K-Rad Kompact D404K |
| Radiator type | Type 22 — double panel, double convector |
| Heat output | |
| Output at ΔT50 | 533 W (1819 BTU/h) |
| Output at ΔT60 | 683 W (2330 BTU/h) |
| Size and weight | |
| Dimensions (H × W × D) | 400 × 400 × 105 mm |
| Centre distance | 345 mm |
| Wall to centre | 82.5 or 97.5 mm |
| Weight | 9.16 kg |
| Water content | 1.64 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.
