It gets so incredibly hot in my conservatory in the summertime, that I'm thinking of investing in a fly screen door.
I noticed that the prices vary wildly. for what looks like pretty much the same thing.
The opening is approx 6'. 8" x 29". Any recommendations please
Just pick one that looks good in the ad. I have one of the magnetic fastening ones. They tend to be a 'one size fits all' though, so you may have issues installing initially with the width of it extends beyond the frame and tries to fix to the pebble dash wall, and later with the height as it drags on the floor and gets in the way of the door closing. Tends to work though.