k-rad-kompact-type-21-double-panel-radiator-500-x-1100mm

K Rad Kompact Type 21 500 x 1100mm Radiator - Double Panel Single Convector

13 reviews

£105.42 (Inc. VAT)

✓ In Stock

FREE DELIVERY

Description

Key Features

  • Type 21 construction — Two panels and one internal convector provide effective heat transfer
  • 500 x 1100mm dimensions — Measures 500mm high and 1100mm wide
  • Pre-fitted top grille and side panels — Conceal the internal components for a neat finish
  • Heavy-duty mounting brackets — L-shaped brackets provide secure wall mounting
  • Installation accessories included — Supplied with an air vent, blanking plugs, screws, and screw caps
  • Standard G½-inch connections — Accommodate standard UK radiator valve connections
  • BS EN 442 conformity — Meets the recognised European standard for radiators
  • 10-year warranty — Covers manufacturing defects

What’s Included

  • 1 x K Rad Kompact Type 21 500 x 1100mm double panel single convector radiator
  • Heavy-duty L-shaped fixing brackets
  • Air vent and blanking plugs
  • Screws and screw caps

Double Panels With Added Convection

The K Rad Kompact combines two water-filled panels with a single row of convector fins between them. Attached to one panel, the fins increase the surface area available to transfer warmth into your room, providing more heat than a comparable panel-only design.

At 500mm high and 1100mm wide, this model makes use of horizontal wall space without requiring the height of a taller radiator. When choosing panel radiators, check the rated output against your room’s heating requirements.

A Tidy Finish From Installation

Factory-fitted side panels and a top grille cover the internal fins while allowing warm air to circulate. They arrive already fitted, giving the radiator a complete appearance without leaving the convector exposed.

If you’re comparing double panel plus radiators, Type 21 models with one internal convector offer a practical balance between heating surface area and radiator depth.

K Rad Kompact Type 21 500 x 1100mm Radiator - Double Panel Single Convector


Brackets and Accessories Included

The supplied heavy-duty L-shaped brackets bolt directly to the wall. Holders pre-fitted to the radiator’s back allow it to hang securely onto the brackets, while the air vent, blanking plugs, screws, and screw caps help complete installation.

Standard G½-inch connection threads accommodate suitable radiator valves for connection to your central heating system.

10-Year Manufacturing Warranty

The radiator conforms to BS EN 442 and comes with a 10-year warranty against manufacturing defects, providing added confidence in your purchase.

Buy Your K Rad Kompact Radiator Today

Order the K Rad Kompact Type 21 500 x 1100mm radiator now for practical warmth and a neat finish from our range of radiators.

Specifications

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Technical

K Rad Kompact Type 21 500 x 1100mm Radiator - Double Panel Single Convector – Technical Specifications
Panel Configuration Double
Warranty 10 Years
Panel Profile Flat
Fuel Type Central Heating
Style Modern
Colour White
Installation Type Hot Water
Height 500 mm
Width 1100 mm
Material Mild Steel
Watts Output (Delta 30) 697
Watts Output (Delta 50) 1355
BTU Output (Delta 30) 2378
BTU Output (Delta 50) 4625
Type Panel Radiators
Orientation Horizontal
RAL Colour Code 9016
Pipe Centres 1100
Range Kompact
Panel Type Double Panel Single Convector
Warranty 10 Years

Documents (1)

Technical Drawings

k-rad-kompact-type-21-double-panel-radiator-500-x-1100mm
k-rad-kompact-type-21-double-panel-radiator-500-x-1100mm

K Rad Kompact Type 21 500 x 1100mm Radiator - Double Panel Single Convector

Product Code: P511K

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£105.42 (Inc. VAT)

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Lowest Price Guaranteed
Plumbworld £105.42
B&Q £124.20
Victorian Plumbing £124.94
HeatandPlumb.com £146.95
Wholesale Domestic £113.95
showerstoyou.co.uk £227.93

Prices last checked on 10/11/2026
All prices are including VAT and excluding delivery charges


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13 Product Reviews

Add your own review
  • 5/ 5
    Tom Murphy rated another option 5/5
    ★★★★★

    Brilliant service from Plumbworld and quality product as usual.

  • 5/ 5
    Alan rated another option 5/5
    ★★★★★

    Replaced a previous leaking radiator of a similar size so a straight forward job. no issues.

  • 5/ 5
    Glen jarvis rated another option 5/5
    ★★★★★

    Great value and superb service all round. Will use again.

  • 5/ 5
    Paul Heal rated another option 5/5
    ★★★★★

    I needed to replace all my radiators as they were over 35 years old. These look better and seem to heat up quicker. Great buy.

  • 5/ 5
    Linda rated another option 5/5
    ★★★★★

    Placed my order and the item was delivered earlier than stated. Was delighted with the service

  • 5/ 5
    L Shields rated another option 5/5
    ★★★★★

    Plumbworld wass quick to communicate and send order. Product was great quality and very good value.

  • 5/ 5
    Bill Mann rated another option 5/5
    ★★★★★

    Excellent product, well packed and delivered on time.

  • 5/ 5
    D.Germaney rated another option 5/5
    ★★★★★

    A Really good radiator,from a really good supplier.

  • 5/ 5
    Mark Sheppard rated another option 5/5
    ★★★★★

    Bought this Rad to replace an old single panel Rad. Finish’s off a newly decorated hallway nicely and giving off a lot of heat - which is probably overkill seeing as it is the same length as the old one. Only problem I faced was not ensuring the tails were super tight before fitting to the wall - one end started to loosen as I tightened the pipework to it (tightening in the opposite direction) - user error!

  • 5/ 5
    Allan Biggs rated another option 5/5
    ★★★★★

    I went for this brand as it had a higher heat output than the Screwfix/Toolstation/B&Q equivalent. It is well made with a good finish. All the normal fittings included. I would buy again.

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