They were about £13 each. Goes on front of the frame in the interior mounted with velcro straps and has a zip in the middle to unzip and open/close the window. Keeps the flies and moths out thankfully.
Although Ironically, I found a small spider camped on my net catching the bugs who get stuck on it! Lazy bug-ger can’t build his own web! But I left him be.
It’s an absolute lifesaver- beforehand I’d hate opening the window due to the insects. My bedroom would get extremely warm. Now I can vent air out and not worry about critters.
How adjustable are they, aren’t windows often different sizes? Have been wondering about something like this. But more to keep the cat in than to keep bugs out.
The netting came as a big square, around 1.5 meters wide. It also came with a roll of tape with velcro on it and the zipper. You just have to cut the netting and tape yourself, then cut a slit in it and the zipper velcros on with a double sided strip thingy.
Olive netting and either duct tape or staples.
Depending on how much you care about your frames
PVC frames, so tape is probably better. Any residue can always be removed with some solvents. But some sealable opening is necessary to open/close the window through it. Sticky back velcro seems like the obvious option to put on the frame. At least a section near the window handle.
The zip is the opening that’s sealable