I'm not sure what make our curtains are (they might be Kiravans) but they came with press studs to keep them in place at either end and the 'receiving part' is screwed into the metal next to the window. When we first got our van, I realised that the converter had screwed them into a part of the door where the rubber seal went which caused a small leak and the curtain got wet. My solution was to slide some strong magnets into the end seams and use them to stick to the metal window surround. I also took the original fixings and replaced them after filling the holes with a blob of silicone sealant just in case. That sounded better in my head than it looks on the screen so if anybody needs pictures, I'll post them!