We had some made to measure by a firm we saw at the show in NEC in 2011. They are a thin mesh and Velcro above the door inside and have a weight along the bottom edge. Not bad but not as good as we would like.

Strange things flyscreens, Steel hanging chains around £105, JML net around £20,
and the strange Chenille anything from £10 - £20. I don't have one on the troll at the
moment but will be looking for one soon, the mosquitos are breeding fast on all this
standing water!

I used a fly screen from Aldi for my Puck, it was the same idea, Velcro at the top and weighted at the bottom, it was ok but didn't stop every little pest getting in. The only problem with Eribas are that they have a pot belly and you get gaps at the side. The purpose made one's by Hymer have an inner frame to avoid the gaps, however they are very expensive.

Now that Hymer actually seem to be able to supply the waste bin on the door for new vans, does anyone know if they've cracked the problem of the bin walloping the flyscreen when the door is closed? I realise you should open the flyscreen before closing the door but I bet it doesn't always happen that way.