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Kartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White - 4,309 BTU

In stock
SKU
ASP18-55VSW
£152.95

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Call an heating expert on 01282 429061

Key Features

More Information
Manufacturer Kartell UK Ltd
Manufacturer Warranty 5 Years (T&C’s Apply)
Weight 21.12kg
Orientation Vertical Orientation
Panel Type Single Panel Radiator
Colour White
Height 1800 mm
Width 540 mm
Heat Output BTU 4309
Radiator Pipe Centres (mm) (Plus Valves) 540
Radiator Wall To Pipe Centres (mm) 40
Radiator Colour White
Model Aspen White Vertical Single
Brand Kartell K-Rad
Fuel Type Central Heating
Width (mm) 540
Depth (mm) 55
Height (mm) 1800
Manufacturer Part No ASP18-55VSW

Product Details

Home > Radiators > Designer Radiators > Vertical Radiators > Kartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White

Kartell K-Rad Aspen — Single White Vertical Radiator

Kartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White — 4,309 BTU

A single panel designer vertical radiator delivering 4,309 BTU from a 63mm profile. 1800mm tall, 540mm wide, 18 oval tubes. Gloss White finish. 5 year Kartell UK manufacturer guarantee. All fixings included.

4,309 BTU at Delta T60 1,263W 5 Year Guarantee Gloss White Single Panel 1800 x 540mm SKU: ASP18-55VSW EAN: 5055681407452
4,309
BTU Delta T60
1,263W
Watts
1800
Height mm
540
Width mm
63
Depth mm
5yr
Guarantee
The Kartell K-Rad Aspen 1800 x 540mm Single White is the widest single panel in the full-height Aspen white range — chosen when a 300mm or 420mm model doesn’t deliver enough heat. At 4,309 BTU (1,263W) it is ideal for large master bedrooms, open-plan living areas, and sizeable hallways. The 540mm pipe centres distinguish it from all narrower Aspen variants. Gloss white finish. SKU: ASP18-55VSW. 5-year Kartell UK guarantee.
The Kartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White delivers 4,309 BTU (1,263W) at Delta T60 from a depth of just 63mm. At just 55mm deep this radiator sits close to the wall. Finished in gloss white and backed by a 5 year manufacturer guarantee from Kartell UK with all fixings included.
Free Delivery Over £500
5 Year Guarantee
All Fixings Included
UK Stock
63mm Profile
Why choose the Aspen Vertical Radiator 1800 x 540mm Single White?
1

4,309 BTU Verified Output

Tested and certified at Delta T60. Suitable for medium-to-large rooms with average insulation. Use our BTU Calculator tab for a room-specific check.

2

540mm Wide — Widest in the 1800mm Range

Maximises heat output for the full-height format. 540mm pipe centres.

3

Single Panel — 63mm Depth

At just 55mm deep this sits flush to the wall, preserving floor space and giving a clean, unobtrusive appearance.

4

5 Year Kartell UK Guarantee

Registered directly with Kartell UK, covering all manufacturing defects from date of purchase.

5

18 Designer Oval Tubes

Greater surface area than round tubes means more efficient heat transfer. The oval profile also gives a more premium aesthetic than standard flat panel radiators.

6

Ready to Install — All Fixings Included

Weighing 21.12kg empty with all wall brackets, fixing screws, wall plugs, air vent and blanking plug supplied. Valves sold separately.

Full Technical Specification
SpecificationDetail
Product NameKartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White
SKU / Kartell CodeASP18-55VSW
EAN / GTIN5055681407452
Height1800mm
Width540mm
Depth (Total Wall Distance)63mm
OrientationVertical
Colour / FinishGloss White
MaterialMild Steel
StyleSingle Oval Tube — Designer
Number of Tubes18 (Single Panel)
BTU Output (Delta T60)4,309 BTU
Watt Output (Delta T60)1,263W
Fuel TypeCentral heating — gas, oil, or electric
Pipe Centres540mm
Wall to Pipe Centres59mm
Valve Connection1/2 inch BSP
Empty Weight21.12 kg
Max Working Pressure7.8 bar
Fixings SuppliedYes — all fixings included
Manufacturer Guarantee5 years — Kartell UK
ValvesNot included — sold separately (see Valves tab)
Need a different size or output?
At 4,309 BTU this radiator suits medium-to-large rooms with average insulation. Use the BTU Calculator tab for a room-specific recommendation. Alternatively view the 1800 x 540mm Double White.
Compare other sizes in this range
Size (H x W)BTU (ΔT60)WattsStyle
1800 x 540mm THIS PRODUCT4,3091,263WSingle Panel
1800 x 300mm 2,392701WSingle
1800 x 420mm 3,368987WSingle
1800 x 540mm Double WhiteHigher OutputSee ProductDouble
Is this radiator powerful enough for your room?
Kartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White — 4,309 BTU at ΔT60
At 4,309 BTU, this radiator suits medium-to-large rooms with average insulation. Enter your room details below.
Free BTU Calculator
Enter your room dimensions below — we will calculate your exact heat requirement.
Your exact room heat requirement:
Understanding Delta T60

All radiator heat outputs are quoted at Delta T60 — the European standard assuming a mean water temperature 60°C above room temperature. Most modern combi boilers operate at or near this standard.

How to install a designer vertical radiator — video guide

Watch our step-by-step installation guide below. Professional installation by a Gas Safe registered engineer is strongly recommended for all connections to gas central heating systems.

Installation Notes
Pipe Centres540mm
Wall to Pipe Centres59mm
Wall Projection63mm
Valve Connection1/2 inch BSP — angled, straight, or corner valves
Max Working Pressure7.8 bar
Compatible SystemsSealed and open vented — gas, oil, electric, heat pump
Fixings SuppliedYes — wall brackets, screws, plugs, air vent, blanking plug
Which radiator valves do I need?

Valves are not included and must be purchased separately. For this gloss white radiator, we recommend White TRV valves for a seamless match. Select your pipework type below.

Angled White Radiator Valves

When to use: Pipework rises vertically from the floor to the side connections. The most common UK installation type.

Straight White Radiator Valves

When to use: Pipework rises from the floor and connects directly to the bottom tappings in a straight vertical line.

Corner White Radiator Valves

When to use: Pipework comes horizontally out of the wall and connects to the side connections of the radiator.

Frequently Asked Questions — Kartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White
The pipe centres are 540mm, with a wall to pipe centres measurement of 59mm. Always check your existing pipe positions before ordering.
Yes — the Aspen range carries a 5 year manufacturer guarantee from Kartell UK, covering all manufacturing defects from the date of purchase.
Valves are not included. For this gloss white radiator we recommend matching White TRV valves. Choose Angled (most common — pipe from floor to side), Straight (pipe directly up), or Corner (pipe from wall). See the Valves tab for direct links.
This radiator projects 63mm from the wall. One of the slimmest profiles available for a designer vertical radiator.
Use the BTU Calculator tab for a room-specific answer. The double panel version delivers significantly more heat from the same wall width but projects further from the wall.

Looking for a radiator close to this size? The Kartell K-Rad Aspen Vertical Radiator 1800 x 540mm Single White (SKU: ASP18-55VSW) is the closest match on the market to the following searches: 1800 x 520mm white vertical radiator, 1800 x 530mm white vertical radiator, 1800 x 540mm white designer vertical radiator UK, 1800 x 550mm white single panel radiator, 1800 x 560mm white vertical radiator, 1800 x 580mm white single panel radiator, 1800 x 600mm single white vertical radiator, 1750 x 540mm white vertical radiator, 1850 x 540mm white vertical radiator, 1800mm tall white vertical radiator wide, Kartell Aspen 1800 540 white, ASP18-55VSW, EAN 5055681407452. Also found via: wide white vertical radiator 1800mm, 540mm wide white vertical radiator UK, 63mm depth white radiator 1800mm.

Delivery Information
Free DeliveryFree express delivery on all orders over £500 to UK mainland addresses
Standard DeliveryCharged on orders under £500 — calculated at checkout
Delivery AreaUK mainland only. We do not deliver to Northern Ireland, Scottish Highlands, Channel Islands or overseas
Lead TimeMaximum 14 working days from order placement. Call 01282 429061 to confirm availability
Despatch ConfirmationYou will receive an email when your order is despatched
Delivery AddressWe deliver to your registered billing address only
Finance OptionsSpread the cost with Klarna or Clearpay — available at checkout
Returns Policy
Returns Window14 days from receipt of goods
How to ReturnRequest a returns number in writing before sending items back. Call 01282 429061 or email us
Return PostageCost of returning goods is borne by the customer. Original delivery charges are non-refundable
Restocking ChargeA 25% restocking charge may apply to non-faulty returns
Condition of ReturnItems must be unused and in original, unopened packaging
RefundUpon receipt and inspection we will issue a full refund, exchange or credit
Faulty ItemsSent to manufacturer for testing. If confirmed faulty, 100% of the original product value will be credited
GuaranteeThis radiator carries a 5 year Kartell UK manufacturer guarantee against manufacturing defects
Need help with your order?
Call 01282 429061 Monday to Friday or visit our full Terms & Conditions.