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Cast iron radiators from our Princess range. Ideal for hallways & narrow rooms.

Set room size / BTU Calculator

Heat Output (BTU) Calculator

Use this calculator to determine the required heat output to heat your room.

A BTU (British Thermal Unit) is a unit of measurement of heat per hour. The BTU calculator will determine the size and quantitry of radiators needed per room.

Room Type

Room Dimension


BTU's Required:

  1. Size / Finish
  2. Valves
  3. Pipe Shrouds
  4. Wall Stays
  5. Bleed Nipples



Colour / Finish

Manual Radiator Valves

A manual radiator valve remains either on or off. Manual valves need to be physically rotated by hand to increase or decrease the amount of hot water flowing into your radiator.

Thermostatic Radiator Valves

A thermostatic radiator valve or TRV is self-regulating, and controls the temperature of the radiator by changing the amount, or flow, of hot water into your radiator.

Pipe Shrouds

Pipe shrouds are used to cover the regular copper pipework of your heating system and to complement your radiator and valves.

Wall Stays

Most cast iron radiators require at least one wall stay to safely hold it to the wall. Radiators over 10 sections require at least 2 wall stays.

Bleed Nipples


£100 (inc VAT)


Cast iron radiators from our Princess range. Ideal for hallways & narrow rooms.

Model No: TBK102/103
No Of Columns: 2
Section Height A (mm): 460
Section Width B (mm): 125
Section Height C (mm): 300
Section Height D (mm): 105
Section Width E (mm): 76
Section Depth F (mm): 0
Delta 30 BTUs: 91
Delta 30 Watts: 27
Delta 50 BTUs: 171
Delta 50 Watts: 50
Delta 60 BTUs: 213
Delta 60 Watts: 62
Empty Weight (kg): 5.3
Filled Weight (kg): 6.2
Compatible Connector Tool: RTO001

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