k-rad-kompact-type-21-double-panel-400-x-500mm

K Rad Kompact Type 21 400 x 500mm Radiator - Double Panel Single Convector

13 reviews

£65.83 (Inc. VAT)

✓ In Stock

FREE DELIVERY

Description

Key Features

  • Double panel, single convector design — Provides additional surface area for transferring heat into your room
  • 400 x 500mm size — Fits smaller sections of wall
  • Pre-fitted top grille and side panels — Cover internal components for a neat appearance
  • Wall brackets included — Supplied with heavy-duty L-shaped mounting brackets
  • Standard G½ connections — Suit compatible UK radiator fittings
  • BS EN 442 conformity — Meets the European standard for radiators
  • 10-year warranty — Covers manufacturing defects

What’s Included

  • 1 x K Rad Kompact Type 21 400 x 500mm radiator
  • Wall mounting brackets
  • Air vent and blanking plugs
  • Screws and screw caps

Double Panel Warmth in a Compact Size

Measuring 400mm high and 500mm wide, the K Rad Kompact offers a practical heating option where wall space is limited. Its Type 21 construction combines two panels with one internal convector to transfer warmth into the room.

Double panel plus radiators provide more heat-transfer surface than a single panel design. Match the model’s heat output to your room’s requirements when choosing your radiator.

K Rad Kompact Type 21 400 x 500mm Radiator - Double Panel Single Convector


Neat Finish and Straightforward Fitting

Factory-fitted side panels and a top grille conceal the internal components while allowing warm air to circulate. These panel radiators have a simple finish that suits a variety of interiors.

The supplied brackets support the radiator using holders already fitted to its rear. Standard G½ connection threads accommodate compatible plumbing fittings.

10-Year Warranty

The K Rad Kompact conforms to BS EN 442 and comes with a 10-year warranty against manufacturing defects, offering reassurance for your purchase.

Buy Your K Rad Kompact Radiator Today

Order the K Rad Kompact Type 21 400 x 500mm Radiator now from Plumbworld and bring comfortable warmth to your home.

Specifications

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Technical

K Rad Kompact Type 21 400 x 500mm 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 400 mm
Width 500 mm
Material Mild Steel
Watts Output (Delta 30) 266
Watts Output (Delta 50) 516
BTU Output (Delta 30) 908
BTU Output (Delta 50) 1759
Type Panel Radiators
Orientation Horizontal
RAL Colour Code 9016
Pipe Centres 345
Range Kompact
Panel Type Double Panel Single Convector
Warranty 10 Years

Documents (1)

Technical Drawings

k-rad-kompact-type-21-double-panel-400-x-500mm
k-rad-kompact-type-21-double-panel-400-x-500mm

K Rad Kompact Type 21 400 x 500mm Radiator - Double Panel Single Convector

Product Code: P405K

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£65.83 (Inc. VAT)

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Lowest Price Guaranteed
Plumbworld £65.83
Tradeplumbing.co.uk £70.25
HeatandPlumb.com £74.95
Victorian Plumbing £84.94
showerstoyou.co.uk £102.60

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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