DIY used to proof a window
I bought this with the intention to cover an opening with a Sash Window. I adjusted the fixing method to suit a rented flat, and window as most of the images of this product, showed up with balconies etc.
Basically used two voile/curtain poles (screw, not spring loaded) weaved in and out the top and bottom of the required size of net. tightly screwed those in place so they don't move, and then used small hooks to hook out the edges to stop any escaping that way.
Wonder perfectly well. See the pictures for more details.