Is this rooflight the vented version

This version opens by pushing on the two arms. Also it can be tilted in all 4 directions. However air does not flow through when fully closed.

what is the over hang measurement to cover the orignal screw holes ,needs to be 50x50

Suggest you check the website specifications carefully as I think it only overhangs 25mm all round.

How do i fot this to a shed roof. Ie Under the felt or on top

The fitting is for a caravan, I fitted it on a Hobby 495 on the roof. It needs to be sealed to stop ingrest of rain.

What is the depth of the roof needed. As I have a pop. Thanks

Go to the advert and then I believe 'Specifications'. It lists two sizes dependent on the thickness of the roof.

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Dometic Waeco SEITZ 9104100289 Mini Heki S Roof, 23-42 mm

Dometic Waeco SEITZ 9104100289 Mini Heki S Roof, 23-42 mm

Product ID: 53636195

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Details

Material
Glass
Orientation
Rear
Colour
White
Brand
Dometic
Item thickness
42 Millimetres

💧Waterproof bad weather seal

📏400x400mm standard size

⚙️3-position adjustable lever

Description

🌟 Elevate your caravan vibe with smart light and weatherproof style!

EFFORTLESS OPERATION - Smooth, ergonomic lever adjustment means you control comfort with a simple touch—no tools required.
LIGHT UP YOUR JOURNEY - Maximize natural light with a sleek, compact design that brightens your space without compromising style.
WEATHERPROOF INNOVATION - Bad weather position ensures no water intrusion, keeping your interior dry and cozy no matter the forecast.
PERFECT FIT ZERO HASSLE - Designed for universal installation in standard 400x400mm dome lights—upgrade your caravan effortlessly.
TAILORED VENTILATION CONTROL - Three distinct opening positions let you customize airflow from fully open to weatherproof sealed.

The Dometic Waeco SEITZ 9104100289 Mini Heki S Roof is a compact, 400x400mm smart roof light designed for universal fit in standard dome openings. Featuring a user-friendly lever with three adjustable positions—including a weatherproof seal to prevent water ingress—this lightweight (3.4 kg) roof hatch enhances ventilation and natural light in caravans and motorhomes, combining practical durability with sleek design for the modern traveler.

Specifications

Vehicle service type	Caravan
Manufacturer	SEITZ
OEM part number	910410289
Global Trade Identification Number	04015704182514
Automotive Fit Type	Universal Fit
Model	9104100289
Product Dimensions	7.8 x 21.18 x 21.81 cm; 3.4 kg
Item model number	9104100289
Manufacturer part number	9104100289
Item Weight	3.4 kg

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