STYLE 40x40 - Roof window for motorhomes and campervans (with 100cm² permanent ventilation)
- Blind + mosquito net + LED
- Permanent ventilation 100 cm²
- Double acrylic glazing 43R
100 cm² of permanent ventilation, with double acrylic glazing, in the most common roof cut-out. Fits flat, ribbed and curved roofs. Supplied with magnetic blind and mosquito net, LED frame optional. See more
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- Free delivery from £399
- 30-day returns
- Free technical support
Replacing a roof window? Our guide helps you find the cut-out size and the right model.
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- Free delivery from £399
- 30-day returns
- Free technical advice
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Monday to Friday, 10:00–17:00
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Full description
Full description
The STYLE 40 × 40 is a roof window in double acrylic glazing for the most common cut-out on converted vans, with 100 cm² of permanent ventilation: air keeps flowing with the window closed. It mounts directly on flat and corrugated roofs. ECE R43 approved.
Choosing the right size and model
- The size shown is the cut-out size in the roof: 400 × 400 mm, the most common cut-out on converted vans.
- The frames overhang on each side: allow up to 130 mm more in width and 110 mm more in height for the interior frame. It stands 12 cm above the roof.
- Roof thickness: 28 to 70 mm, flat or corrugated.
- The warm-white 12/24 V LED inner frame is an option: it saves adding a separate ceiling light above the same opening.
Which version?
- With 100 cm² permanent ventilation (this page): air keeps flowing with the window closed, against condensation and for vehicle approval.
- Closing fully: the STYLE 40 × 40, for a conversion that already has its approval airflow elsewhere. Same window, same price.
- A 12 V fan in the same 400 × 400 mm cut-out: the EuroVan 40 × 40 or the VANVENT 3.0.
- A larger opening: the PANORAMA SLIM 3 LED.
Advantages of the STYLE 40 × 40
- A constant flow of air: 100 cm² of permanent ventilation holds condensation down, as many approval bodies require
- The most common cut-out: the reference size on most van layouts, and the easiest to find accessories and spare parts for later
- Direct fitting: flat or corrugated roof, it mounts straight on, with the ridges filled with butyl: fewer joints over the years
- Comfort included: magnetic blackout blind and mosquito net
- Double acrylic glazing, UV-resistant: opening up to 50°
Package content
- 1 × STYLE 40 × 40 roof window with 100 cm² permanent ventilation
- 1 × Magnetic blackout blind
- 1 × Magnetic mosquito net
- 1 × Full set of screws
- 1 × Fitting guide
- LED inner frame if you pick that version
What you will need
- Sikaflex 552 AT adhesive-sealant, on its own or in our Sika pack for roof windows
- On corrugated panels: Sika 831E butyl to fill the ridges
- A jigsaw and a cordless drill/driver
Downloads
- Permanent ventilation test report (PDF)
- Skylight buying guide (online guide)
Frequently asked questions
Is it road legal?
Yes — ECE R43. It can be fitted without manufacturer approval and is accepted for conversion approval across Europe (e.g. VASP in France, TÜV in Germany, ITV in Spain), in the UK (DVLA, MOT) and in Switzerland (MFK).
What does the permanent ventilation change?
100 cm² of air keeps flowing with the window closed, which holds condensation down and meets what approval bodies usually ask for on a converted vehicle.
Will it fit my roof thickness?
It takes roof thicknesses from 28 to 70 mm, on a flat or a corrugated roof, mounted directly.
How much room does it take?
The cut-out is 400 × 400 mm; allow up to 130 mm more in width and 110 mm more in height for the interior frame. It stands 12 cm above the roof.
A question or a doubt?
Our technical team answers within 24 hours, before you buy and while you fit it. Contact us →
Find the roof window or vent for your cut-out
All our roof windows and vents, by cut-out size.
Roof windows
-
Roof window
PANORAMA SLIM 3 LED
- Cut-out
- 500 × 500 · 700 × 500 · 800 × 500 · 960 × 655
- LED
- Yes
- Ventilation
- 140–226 cm²
- Roof
- 25-70 mm
- Height
- 6 cm
-
Roof window
PANORAMA LED 50 × 70
- Cut-out
- 700 × 500
- LED
- Yes
- Ventilation
- 150 cm²
- Roof
- 25-75 mm
- Height
- 12 cm
-
This modelRoof window
STYLE 40 × 40
- Cut-out
- 400 × 400
- LED
- –
- Ventilation
- –
- Roof
- 28-70 mm
- Height
- 12 cm
Roof vents and fans
-
Skylight dome
SKYDOME 40x40
- Cut-out
- 400 × 400
- LED
- –
- Ventilation
- –
-
Roof vent fan
POWER VENT
- Cut-out
- 280 × 280 · 320 × 320
- LED
- –
- Ventilation
- 70 cm²
- Roof
- 25-80 mm
-
Roof vent fan
VANVENT 3.0
- Cut-out
- 400 × 400
- LED
- Yes
- Ventilation
- –
- Roof
- 27-80 mm
- Height
- 12.7 cm
-
Roof vent fan
EuroVan 40x40
- Cut-out
- 400 × 400
- LED
- –
- Ventilation
- –
- Roof
- 25-60 mm
-
Roof vent fan
EuroVan 36x36
- Cut-out
- 360 × 360
- LED
- –
- Ventilation
- –
- Roof
- 25-60 mm
-
Roof vent fan
EuroVan 28x28
- Cut-out
- 280 × 280
- LED
- Yes
- Ventilation
- –
- Roof
- 25-50 mm
Replacing a Dometic Heki?
Measure the cut-out in the roof, not the visible frame of the old skylight.
| Your skylight | Cut-out | Our replacement |
|---|---|---|
| Mini Heki | 400 × 400 | STYLE 40 × 40 · VANVENT 3.0 |
| Midi Heki | 700 × 500 | PANORAMA SLIM 3 LED · PANORAMA LED 50 × 70 |
| Heki 2 · Heki 3 | 960 × 655 | PANORAMA SLIM 3 LED |
What you will need
- Sikaflex 552 AT adhesive-sealant, alone or in our Sika pack for roof windows
- On corrugated roofs: Sika 831E butyl to fill the ridges
- A jigsaw and a cordless drill
- For fans and LED lighting: a fused 12 V supply
Customer reviews
No reviews on this version yet. The STYLE 40x40, same model, is rated 4.7/5 by 3 customers.
Read the reviews →A question about your project?
Our technicians answer before and after your order, Monday to Friday, 10:00 to 17:00.















