Dometic Seitz Mini Heki Style Skylight - 400x400mm - 25-42mm

The Dometic Seitz Mini Heki Style is a compact and durable roof light designed specifically for ca...

Best current price£157.65from B&Q

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B&QB&Q - Seitz Mini Heki Style Skylight 40X40Cm Roof Caravan Motorhome 25-42 No Vent
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eBaySEITZ MINI HEKI STYLE SKYLIGHT 40X40CM ROOF CARAVAN MOTORHOME 25-42 NO VENT
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eBayDometic Mini Heki Style Roof Cap, 40x40cm, Cream, Without + Defective (283713)
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Product Information

Full details

The Dometic Seitz Mini Heki Style 400x400mm is a premium roof light engineered for caravan and motorhome owners who want to improve natural light and ventilation in compact spaces. This unit features a durable double-glazed acrylic dome and a user-friendly handle mechanism, making it an excellent choice for enhancing interior comfort. While it offers excellent versatility with three opening positions, users should be aware that this specific model does not include forced ventilation, requiring careful consideration of your vehicle's existing air circulation system.

All features

Model Part Number9620008620
BrandDometic

Extended Product Information

FAQs

Can I install this on a roof thicker than 42mm?

No, this model is specifically engineered for roof thicknesses between 25-42mm. Using it outside of this range may prevent secure installation.

Does this model provide forced ventilation?

No, this specific version of the Mini Heki Style does not include forced ventilation.

How do I clean the dome?

Clean the dome with a soft cloth, water, and mild soap. Avoid harsh chemicals that can damage the acrylic.

What is the aperture size?

The cutout size required is 400 x 400 mm.

What are the three opening positions?

The positions include fully open, half-open, and a bad-weather position for light ventilation during rain.

Troubleshooting

Dome is difficult to open or close

Check the handle mechanism for debris or obstructions and ensure the hinge pivots are free from grit.

Water leaking around the frame

Inspect the exterior sealant bead for cracks or gaps and re-apply an appropriate exterior-grade sealant if necessary.

Excessive noise while driving

Verify that the skylight is fully latched in the closed position and ensure the rubber seal is seated correctly.

Pros and Cons

Pros

  • Durable double-glazed construction for improved insulation
  • Aerodynamic shape reduces wind noise while driving
  • Easy-to-use manual handle operation
  • Compact 400x400mm size fits most common roof cutouts
  • Multiple opening settings offer flexible ventilation control

Cons

  • Does not include forced ventilation
  • Limited to specific roof thickness range of 25-42mm
  • Requires professional sealant application for weatherproofing

Setup, Compatibility & Care

Compatibility is strictly limited to roofs with a thickness between 25 mm and 42 mm. Installation requires a 400 x 400 mm cutout and the use of appropriate, high-quality, non-permanent sealant (butyl tape or approved mastic) to ensure a watertight seal against the roof membrane. For care, clean the acrylic dome only with water and a mild detergent or specialized acrylic cleaner; avoid using alcohol-based, abrasive, or solvent-based cleaners, as these can cause the acrylic to crack or lose its clarity. Regularly inspect the rubber seals around the frame for signs of degradation to maintain the weatherproofing properties of the skylight.

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