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Spend £250 Or More & Get Free Delivery/Save 10% On Towel Rails *Discount Applied To Towel Rails Only* Spend £250 Or More & Get Free Delivery/Save 10% On Towel Rails *Discount Applied To Towel Rails Only*
Valves Not Included

Ultra Colosseum - High Gloss Silver Triple Radiator 1800mm x 381mm

Ref: HXS12


Availability: In Stock

  • 10 years guarantee
    ON ORDERS ABOVE £250.00

BTU Calculator

Radiator efficiency, is measured in British Thermal Units (BTU). The dimensions of a room are used to calculate the BTU output required to heat that room. Radiators all have a known and calculated BTU output. Using the BTU outputs in the Product Specification or description above, it is easy to calculate the size of radiator you need to help provide the total heat output necessary for your room.

How to calculate BTU requirement

The best way is to ask your plumber to perform the calculation for you. If you don't have access to a plumber, you can use the BTU Calculator below as a guide. Please note that the calculated figure relates to the combined heat output of all radiators in the room, therefore the towel rail or radiator that you purchase need not satisfy the entire BTU output if it is used to complement existing radiators.

This calculator is for guidance use only.

1. Please select your required units
Metric (metres) Imperial (feet)
2. Please enter room measurements
Height of room:
Width of room:
Length of room:
Window Area x²:
3. Please select type of room:
4. What is below the room?
5. What is above the room?
6. Please select type of outside walls:
7. Please select type of windows:
8. Please select number of outside walls:

Watt/BTU requirements:
Watts Required: 
BTU's Required: 

The Ultra Colosseum 1800x381mm high gloss silver triple column radiator looks equally stylish in both modern and traditional interiors. Featuring a glossy silver finish and eight vertical columns, this classically designed radiator is vertically mounted to save on space. The vertical design also creates a dramatic feature.

The Colosseum column radiator boasts an impressive 6275 BTU output to ensure your room is quickly heated to a comfortable warmth.

Please note: radiator valves are not included.

Ultra Colosseum Silver Triple Column Radiator Features:

  • Glossy silver finish
  • 1800mm x 381mm
  • Classic styling
  • Space saving vertical design
  • Eight columns
  • BTU: 6275
  • Watts: 1839


Wattage at Delta T30671
Wattage at Delta T501308
BTU at Delta T302298
BTU at Delta T504463
Maximum Pressure6 bar
Maximum System Temperature95 degrees
Inlet Size1/2 inch
CE Marked / EN442Fully Certified
Installation TypeCentral Heating
StyleVertical Traditional Column Radiator
Output (watts)1839
Output (btu)6275
Pipe centres (mm)471 (mm approx)
Guarantee10 Years


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