You can get fixed nets in a lot of the homewares shops in Bali. I got ours in a place in Kuta, Lombok but they brought them over from Bali and have long since shut down. They are nice ones come in different colours etc but they do also keep the mozzies out. I know I see some outside a shop on theNgurah Rai bypass but should have no problem getting them in Kuta too.