PaulT is correct. The screens we bought attach to the outside of the camper with hook and loop strips. The sliding covers to keep dust out on the interior remain in place.
Surface prep is key to getting the hook and look sticky backing to adhere to the camper wood. If not prepared properly, when pushing on the screen at the edges to remove them from the inside and access the turnbuckles, the hook and loop strip can pull away from the wood.
Our have been on for years and worked great on our Alaska trip keeping no see ums and mosquitos out but still allowing ventilation.
