Stelrad Compact K1 700 × 1100 mm horizontal steel radiator, with single panel, single convector construction and standard ½-inch connections.
Heating performance
- 439 W at 45/40/20°C — calculated from the EN 442 rated output using the manufacturer's coefficient.
- 633 W at 55/45/20°C — manufacturer's published ΔT30 output.
- 1,229 W at 75/65/20°C — manufacturer's published ΔT50 reference output.
Temperatures are flow / return / room. The 45/40/20°C figure is a calculated estimate, not a separate tested duty point. Select against the room heat loss and the intended system temperatures.
Dimensions and specification
- Height: 700 mm
- Length: 1100 mm
- Radiator depth: 61 mm
- Panel type: K1 — single panel, single convector
- Connections: ½ inch
- Manufacturer article: 143819