The seals mentioned above are useless if the side screen front edges don't press on them. I've seen some screens with so little bend in them you could see a fingers width gap at the top. Mine were nothing like as bad but did rattle over bumps as only lightly touching seal at the top. I managed to carefully bend mine over the edge of my bench against a protective cloth. Better still is to dissamble screens and tighten bend on stainless brackets (particularly front one) in a vice, which I did later in ownership. This such that doors when fully shut allow front edge of screen frames to push noticeably on seals, leaving no rattles, wind or rain ingress - from that area at least
Note the U shaped seals benefit from a regular smear of silicone grease on front edge of frames to ease engagement as doors shut.
