Type 21 panel configuration

A Type 21 radiator contains two heating panels with one convector positioned between them. The additional panel increases the radiating surface, while the convector helps warm the surrounding air.

This arrangement produces greater output than a comparable Type 11 radiator while maintaining a shallower profile than a double-panel, double-convector Type 22 model.

Balanced heat output and projection

The Type 21 configuration offers a useful middle ground between slimness and heating performance. It may be suitable for bedrooms, home offices and other spaces where a Type 11 does not provide enough output but a deeper Type 22 is unnecessary.

Suitability depends on the selected radiator size, stated output and the calculated heat loss of the room.

Pre-fitted grille and side panels

Factory-fitted side panels and a top grille conceal the internal convector and create a neat, finished appearance. Their ventilated design allows warm air to circulate through the radiator.

Wall-mounting hardware included

Heavy-duty L-shaped brackets are supplied for wall-mounted installation. The brackets attach directly to a suitable wall, and the radiator hangs from the holders fitted to its rear.

An air vent, blind plugs, fixing screws and screw caps are also included.

The supplied fixings may not be suitable for every wall construction. Use fixings appropriate to the wall material and the filled weight of the radiator.

Standard G1/2-inch connections

The radiator features G1/2-inch threaded connections for use with compatible UK plumbing fittings. Check the existing pipe positions and select suitable radiator valves before installation.

BS EN 442 conformity

The radiator conforms to BS EN 442, the recognised standard covering the testing and declared performance of radiators for hot-water heating systems.

Choose the correct heat output

Radiator selection should be based on the room’s heat-loss requirement rather than dimensions alone. Room size, insulation, glazing, external walls and system temperatures will all affect the output required.

A qualified heating professional can calculate the required output and confirm compatibility with the heating system.

10-year guarantee

The radiator is covered by a ten-year guarantee against qualifying manufacturing defects, subject to the manufacturer’s conditions and exclusions.

Balance heating performance and projection

Choose the Prorad Type 21 Double-Panel Convector Radiator for increased heat output, standard UK connections and a practical medium-depth design.