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Kartell K-Rad Aspen 1800mm Double White Vertical Radiator — [Choice of Widths]

In stock
SKU
ASP18-VDW
As low as £114.00

Need Help?

Call an heating expert on 01282 429061

Key Features

More Information
Manufacturer Kartell UK Ltd
Manufacturer Warranty 5 Years (T&C’s Apply)
Orientation Vertical Orientation
Panel Type Double Panel Radiator
Colour White
Height 1800 mm
Heat Output Watts 1,367W — 2,461W
Heat Output BTU 4,664 — 8,397
Radiator Pipe Centres (mm) (Plus Valves) 300mm / 420mm / 540mm (width dependent)
Radiator Wall To Pipe Centres (mm) 51mm
Radiator Colour White
Model Aspen White Vertical Double
Brand K-Rad Designer Range
Fuel Type Central Heating
Width (mm) 300mm / 420mm / 540mm
Product Type Double Panel Radiator
Depth (mm) 79
Height (mm) 1800

Product Details

Home > Radiators > Designer Radiators > Vertical Radiators > Kartell K-Rad Aspen 1800mm Double White Vertical Radiator

Kartell K-Rad Aspen — 1800mm Double White Vertical Radiator — Choice of Widths

Kartell K-Rad Aspen 1800mm Double White Vertical Radiator — 300mm, 420mm or 540mm Wide

A full-height double panel designer vertical radiator in gloss white. Available in three widths delivering between 4,664 and 8,397 BTU. Select your width from the dropdown above. 5 year Kartell UK guarantee. All fixings included. Free delivery on orders over £500.

4,664 — 8,397 BTU 1800mm Height Double Panel Gloss White 3 Widths Available 79mm Depth 5 Year Guarantee SKU: ASP18-VDW
3
Widths
1800
Height mm
79
Depth mm
8,397
Max BTU
4,664
Min BTU
5yr
Guarantee
The Kartell K-Rad Aspen 1800mm Double White Vertical Radiator is the full-height double-panel option in the Aspen gloss white range — delivering nearly double the heat output of the single panel version from the same wall width. Available in 300mm, 420mm and 540mm widths to suit different rooms and BTU requirements. Use the BTU Calculator tab or the Which Width? tab to confirm the right choice for your room before selecting from the dropdown above. SKU: ASP18-VDW. 5-year Kartell UK guarantee.
The Kartell K-Rad Aspen 1800mm Double White Vertical Radiator is available in three widths: 300mm (4,664 BTU), 420mm (6,531 BTU) and 540mm (8,397 BTU). All three share the same 1800mm height, 79mm depth, oval tube double panel construction and gloss white finish. Select your preferred width from the dropdown above. All fixings included. Valves sold separately.
Free Delivery Over £500
5 Year Guarantee
All Fixings Included
3 Widths Available
UK Stock
Choose your width
Why choose the Aspen 1800mm Double White?
1

Double Panel — Up to 8,397 BTU

The double panel delivers nearly double the heat of the single panel version from the same wall width. Three widths available to suit any room. Use the BTU Calculator tab to confirm.

2

1800mm Full Height — Maximum Visual Impact

Standing at 1800mm tall, the Aspen makes a bold design statement while maximising heat output. The oval tube design provides a premium look over standard flat panel alternatives.

3

Gloss White — Timeless Finish

The gloss white finish suits all interior styles from traditional to contemporary. Matches standard UK plumbing fittings and radiator valves for a seamless installation.

4

79mm Depth — Double Panel Profile

Slightly deeper than the single panel at 55mm, but the additional heat output is substantial. Ideal where wall space is available and maximum warmth is the priority.

5

5 Year Kartell UK Guarantee

Registered directly with Kartell UK. All wall brackets, fixing screws, wall plugs, air vent and blanking plug included as standard. Pressure tested to 7.8 bar.

6

Also available as a single panel

Need a slimmer profile? The Aspen 1800mm Single White delivers from 2,392 to 4,309 BTU at just 55mm deep.

Which width do I need?
WidthSKUBTU (ΔT60)WattsPipe CentresRoom Guide
300mm ASP18-31VDW4,6641,367W300mm Small rooms, narrow alcoves
420mm ★ Most Popular ASP18-43VDW6,5311,914W420mm Living rooms, hallways, bedrooms
540mm ASP18-55VDW8,3972,461W540mm Large rooms, open-plan spaces
Not sure which to choose?
Use the BTU Calculator tab — enter your room dimensions and it will recommend the right width. Or call 01282 429061 Mon–Fri for expert advice.
Specification common to all three widths
SpecificationDetail
Height1800mm
Depth79mm
Colour / FinishGloss White
MaterialMild Steel
StyleDouble Panel — Oval Tube Designer
OrientationVertical
Wall to Pipe Centres51mm (all widths)
Valve Connection1/2 inch BSP
Max Working Pressure7.8 bar
Compatible SystemsGas, oil, electric, heat pump — sealed and open vented
Fixings SuppliedYes — all fixings included
Manufacturer Guarantee5 years — Kartell UK
ValvesNot included — sold separately (see Valves tab)
Find the right width for your room
BTU Calculator — Aspen 1800mm Double White
Enter your room details below and we will recommend the correct width — 300mm, 420mm or 540mm.
Free BTU Calculator
Enter your room dimensions to find the right width for your room.
Your room heat requirement:

Understanding Delta T60: All BTU figures are quoted at Delta T60 — the European standard assuming 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 — all three widths
Height1800mm (all widths)
Depth / Wall Projection79mm (all widths)
Pipe CentresMatches width: 300mm / 420mm / 540mm
Wall to Pipe Centres51mm (all widths)
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 in a straight vertical line to the bottom tappings.

Corner White Radiator Valves

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

Frequently Asked Questions — Aspen 1800mm Double White
Use the BTU Calculator tab — enter your room length, width, height and type and it will tell you which width is the right match. As a guide: 300mm (4,664 BTU) for small rooms and narrow spaces; 420mm (6,531 BTU) for most living rooms, bedrooms and hallways; 540mm (8,397 BTU) for large or hard-to-heat rooms and open-plan spaces.
The pipe centres match the width you choose: 300mm model = 300mm pipe centres, 420mm model = 420mm pipe centres, 540mm model = 540mm pipe centres. Wall to pipe centres is 51mm on all three. Always check your existing pipe positions before ordering.
All wall brackets, fixing screws, wall plugs, air vent and blanking plug are included as standard. Valves are not included and must be purchased separately. See the Valves tab for our recommended white TRV valve packs.
All three widths project 79mm from the wall. This is the double panel depth — 24mm more than the single panel version at 55mm. For most rooms this additional projection is barely noticeable, and the heat output benefit is significant.
Yes — all three widths carry a 5 year manufacturer guarantee from Kartell UK, covering all manufacturing defects from the date of purchase. Pressure tested to 7.8 bar at the factory.
Yes — the Aspen is compatible with all standard UK central heating systems including gas combi, gas system, oil-fired, electric, and heat pump. Suitable for both sealed and open vented systems. Max working pressure 7.8 bar.

Looking for a 1800mm double white vertical radiator? The Kartell K-Rad Aspen 1800mm Double White Vertical Radiator (ASP18-VDW) is available in three widths: 300mm (ASP18-31VDW, 4,664 BTU), 420mm (ASP18-43VDW, 6,531 BTU) and 540mm (ASP18-55VDW, 8,397 BTU). Also found via: 1800mm double white vertical radiator UK, 1800 x 300mm double white vertical designer radiator, 1800 x 420mm double white vertical designer radiator, 1800 x 540mm double white vertical designer radiator, Kartell Aspen 1800 double white, K-Rad Aspen VDW range, tall white double panel vertical radiator UK, 1800mm gloss white double radiator, white double panel designer vertical 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.