No, sorry.

If you're a bit of a handyman, you can cut it to the right length.

I would bet you can use any standard velcro for all insect nets that are not made of metal, as all velcro is actually the same. There are a few special ones like the ones that hold extra weight, those are different. Tldr: Yes.

White

As it says in the description; 2 x (0.65 x 2.5). So two curtains each 65cm wide and 2.5m high. Intended for a door where you can walk through with overlapping panels.