I was cruising Ikea last night and found some Sarita see through curtains. These are very finely woven from Polyester and the mesh is as good as my groupbuy net. Might be of interest to someone. 3x1.5m and weigh 300g. That's 67g/sqm. Unfortunately the colour choices are less than desirable but there is a black one. Best bit, 2 off at £6.12 for the pair.