MaxxFan Deluxe 400 x 400mm rooflight fan

The MaxxFan Deluxe is a complete roof ventilation unit: a vent, a 10-speed fan and a rain cover built into one housing.

It clears damp air, condensation and cooking smells out of the van, or pulls fresh air in, and because the lid sits under its own rain cover you can leave it running through a downpour without water getting in.

It is the default choice for UK van conversions, and the reason is straightforward: it does everything the cheaper roof vents do, then adds reverse airflow and rain operation, and it stays quiet enough to sleep under.

Fitting only one powered vent in your build? Make it this one.

We fit these in our own builds. What makes the Deluxe worth the money over a basic roof vent:

• Reverse airflow. Exhaust mode pulls stale air and cooking smells out. Intake mode pushes fresh air in and pressurises the van, which is what actually clears condensation on a cold morning. Cheaper vents only exhaust.
• Rain cover. The lid opens inside its own cover, so it runs in the rain. A standard vent has to be shut the moment it rains, which is exactly when a van full of wet kit needs ventilation most.
• Thermostat and 10 speeds. Set a temperature and leave it. Speed 1 is quiet enough to sleep under; speed 10 shifts up to 1,500 cubic metres an hour.

It costs more than a basic roof fan. It is also the one you fit once and forget about, rather than replacing in two years.

Both lids are the same fan underneath. The only difference is light.

• Clear/Tint — a translucent grey lid that lets daylight through when the fan is closed. Choose this if the fan is in a part of the van where you want the extra natural light, for example over a kitchen or living area.
• Smoke — a solid dark lid that blocks light and glare. Choose this over a bed, or anywhere you want to keep a space dark, or if you simply prefer the cleaner look from outside.

If you are not sure, most builders pick Clear/Tint for living areas and Smoke over the bed.

Brand

Maxxair

Model

MaxxFan Deluxe

Roof opening (400 model)

400 x 400mm — use the supplied template

Roof opening (350 model)

353 x 353mm

Closed dimensions (400)

H132 x W408 x L586mm

Open dimensions (400)

H236 x W408 x L586mm

Fan

10-speed, reversible (intake and exhaust)

Max airflow

Up to 1,500 m³/hour

Control

Remote control or manual knob

Thermostat

Built in

Rain cover

Integrated, lid opens in rain

Power

12V

Speed 10 motor draw

2.66A

Minimum circuit fuse

5A

Warranty

2 years (lifetime on the lid)

Manufacturer verified·Maxxair product pageTrade documentation·Roadpro install manual

Critical safety note. The 400 model cutout is 400 x 400mm, NOT 355 x 355mm. The 355 figure applies to the 350 model. Always use the supplied template before cutting.

• All-in-one ventilation unit: vent, fan and rain cover in one housing
• Fits the standard European 400 x 400mm roof opening (and US 355 x 355mm)
• Remote control or manual knob operation
• Integrated rain cover — lid stays open in the rain
• 10-speed fan with thermostat
• Reversible airflow, intake or exhaust
• Up to 1,500 m³ of airflow per hour
• Two lid options: Clear/Tint lets daylight through; Smoke blocks light and glare

Fitting a roof fan means cutting a hole in the roof, so it is worth knowing what is involved before you buy.

None of it is difficult for a competent self-builder, but each step matters.

• Cut-out. The Deluxe needs a 400 x 400mm hole. If you are starting from a bare roof, you cut to fit. If you are replacing an existing rooflight (a Heki or a Fiamma Vent), the old cut-out is usually a slightly different size and you will need an adapter frame. Do not assume it drops straight in.
• Roof thickness. It is designed for typical van roof skins. A heavily insulated build with a thick false roof may need spacer packing.
• Sealant. Bed it on butyl tape and seal the flange with a polyurethane sealant such as Sikaflex 512. Get this right — a roof leak is the one mistake that ruins the interior underneath it.
• Power. It is a 12V unit wired into the leisure circuit. At top speed it pulls around 3 amps, so continuous speed-10 running is not realistic on a small battery. Most of the time you run it low.
• Headlining. You will need to trim the headlining or interior cladding around the internal frame.

Full step-by-step fitting guides for specific vans are linked at the bottom of this page.

If you are not confident cutting a hole in your roof, this is a fair job to pay an installer for.

• MaxxFan Deluxe unit with integrated rain cover (lid colour as selected)
• Internal trim frame
• Remote control
• Fitting instructions

Not included, and worth ordering at the same time: butyl tape, polyurethane sealant, and an adapter frame if you are replacing an existing rooflight.

Short version: the MaxxFan Deluxe is the most capable powered roof vent in this price bracket. The honest trade-offs:

See our full guide: Campervan rooflights and ventilation explained.

• Free UK mainland delivery on this product.
• 14-day returns on unfitted, unopened units (we cover return postage). See our Returns Policy.
• Once a unit has been fitted to a roof it cannot be returned, so confirm fitment before you cut.
• Covered by the Maxxair manufacturer warranty.

• Pillar guide: Campervan rooflights and ventilation explained
• Product: SkyMaxx 400 rooflight — natural light + passive ventilation companion