
Windows open, insects out
FIBERSHIELD reliably keeps mosquitoes, flies and other insects out, so a window can stay open through a warm evening without paying for it later.
Fiberglass holds its shape
The fiberglass mesh is strong and flexible at once, so it resists sagging and tearing across seasons, and it washes clean for long lasting hygiene.
Made to your measurements
It comes in 1 to 1.5 m or tailored to your own sizes, with frame colours in white, grey, brown or custom, so it fits the opening you actually have.
Our customers say it better than we can
Frequently Asked Questions
What does it keep out?
Mosquitoes, flies and other insects. The mesh is designed to block them reliably while still letting air move through the opening freely.
What is the mesh made from?
Fiberglass, chosen because it is both strong and flexible. That combination gives longevity and stability without the brittleness of cheaper mesh.
What sizes are available?
It comes in 1 to 1.5 m, or custom tailored to your requirements. That means a perfect fit for every window and door size rather than a compromise.
What frame colours are there?
White, grey, brown, or a custom colour. There is enough choice to match existing frames rather than leaving an obvious add on across the window.
How do I clean it?
It is washable, so dust and pollen come off easily and it stays hygienic over years of use. A wipe or a rinse is enough.
Every Vellhaven order is checked by hand
Nothing leaves our warehouse without a person looking at it first. We check the finish, test the moving parts, and pack each piece so it survives the journey to your door. That's why we not only give guarantees on our service, but also achieve outstanding ratings on platforms like Trustpilot.

