Key Features

  • Compact Fit

    The 800mm x 400mm size is ideal for smaller spaces where you still want reliable heat

  • Modern Finish

    A clean white gloss surface gives this radiator a smart look that suits a wide range of interiors

  • Efficient Heating

    The single panel and single convector design helps heat your room quickly and evenly

  • Built to Last

    Made from durable mild steel and backed by a 10-year guarantee for added peace of mind

  • Horizontal Style

    The low-profile horizontal shape works well under windows and across compact wall spaces

  • Easy Installation

    Supplied with fittings and designed for wall mounting with central heating systems

Description

The Kartell K-Flat Kompact Type 11 radiator is a smart choice when you want dependable heating without taking up too much space. Its compact 800mm x 400mm size makes it a practical fit for smaller rooms, while the crisp white gloss finish keeps the look clean, modern and easy to coordinate with your décor.

Designed with a single panel and single convector, this radiator is made to deliver quick, even heat throughout the room. It’s a great option for spaces where you want warmth that feels efficient and consistent, without sacrificing valuable wall area. The horizontal layout also makes it especially useful under windows or in rooms with a more compact footprint.

At just 56mm deep, the K-Flat Kompact has a slim profile that sits neatly against the wall. The square, modern styling gives it a tidy finish, and the mild steel construction offers the durability you’d expect from a quality heating product. It’s a straightforward, reliable solution that feels well suited to everyday homes.

This radiator is designed for central heating systems and comes supplied with fittings, making installation that bit simpler. Valves are required, and the wall-mounted design helps keep the floor clear for a more open feel in the room. Weighing 9.3kg, it’s a manageable size for a neat and secure fit.

Backed by a 10-year guarantee, the Kartell K-Flat Kompact gives you confidence as well as comfort. If you’re looking for a radiator that balances a modern look, practical sizing and efficient performance, this is a strong, space-saving option.

Specifications

width 800mm
height 400mm
depth 56mm
heat source Central Heating
fittings supplied Yes
item colour White
item collection Kompact
heating item type Radiator
item depth 56mm
item guarantee 10 Years
item finish Gloss
item mounting method Brackets and Plumbing
item orientation Horizontal
item range K-Flat
item material Mild Steel
item mounting type Wall Mounted
item shape Square
item weight 9.3kg
item style Modern
packaged item height 76mm
packaged item weight 9.7kg
packaged item width 430mm
valves required Yes
number of panels 3

Kartell K-Flat Kompact Type 11 White 400mm x 800mm Single Panel with Single Convector Horizontal Radiator - KS408F

£184.95
Dispatching from 19th Dec 2026
Buy now, pay later
BTU: British Thermal Units - the amount of heat this radiator gives out per hour. The higher the BTU, the larger the room it can heat.
2115
Pipe Centres: The approximate distance between the centres of the two pipe connections, to help you check it fits your existing pipework.
345mm (approx)
Adding To Basket… The item has been added

* Pre-order - this item will ship when in stock