Hello, If you have Velux windows that open by projection, the product should fit. Kind regards

Removing the adhesive residue was quite tedious. It was only possible with the use of an adhesive remover. However, the window (plastic window) was not permanently damaged.

Yes, there is. It should also be available at Galaxus. Otherwise, google it. BUT: it's a cumbersome and inefficient solution. Above all, you can't open the window without removing the thing almost completely. Ordering the appropriate window glass costs around 500-600 Swiss francs (approx. 500-550 euros), but it is worth it in the long run. You can keep the old window glass and have it replaced at any time.

The 3 sides of the window must not be longer than 4 metres, as indicated in the picture. Works perfectly for me with a normal sized window.

Depending on how you apply the Velcro, you can close the windows. If you put the Velcro on the sides of the window doors, you won't see them, but then it will be almost impossible to close the windows (because the Velcro + the tarpaulin will be too thick for most windows or the closing mechanism will get in the way). The pictures here on Galaxus are the variant where you can no longer close with the tarpaulin. The Velcro should be on the front side of the window/window frame. Then it works with the closing. It's a bit difficult to explain without pictures, but I hope it was understandable enough?

The zipper holds even like this.

I have not seen any mention of this on other sites or on the manufacturer's site. I therefore conclude that it is not possible to wash this accessory in the washing machine.

If you fix the seal correctly, so that both zipper starts at the edge of the opening at the rear of the hinges, then yes. Only folding is no longer possible, as this cover tapers to the rear and where the zipper starts the distance needed for folding is not available. As a tip, I would also seal the rear of the window where the hinges are with adhesive tape so that the slit does not blow the hot air back in. It is not 100 % tight, but it is sufficient.

No hose is supplied with the window kit, it is merely the window cover so that all the exhaust air does not flow back in or the warm outside air cannot simply enter the room unhindered through the window gap. The hose is always supplied with the air conditioner and is usually around 1.5 metres long.

The Kibernetik window seal fits door-high windows without any problems, so it should also fit patio doors (not sliding doors!).

I can't remember exactly how big the thing is. The uncovered gap will probably be relatively small and can therefore be easily neglected. (It's just a matter of not blowing all the warm exhaust air back in again. Besides, it is not necessary to cover the entire perimeter, but only 3 sides). If it is not a permanent installation (it probably won't be, you will probably want to close the window from time to time), you can also help out with a towel. We did this several times because we didn't have enough Velcro strips for all the windows we used. Conclusion: Try it with one part, in an emergency you can always order a second one.

I don't know if Galaxus sells them but I think you can find them in a DIY shop. I think Tesa supplies it.