Casita 12-Panel Square Screenhouse 21122, White with Gray Roof Adds 134 Sq feet of 3 season living space - 90-percent preassembled for stress free set up . Heavy duty metal frame has baked on architectural finish to resist fading and oxidation Fiberglass screening is rustproof 18 x 16 memory mesh  Lets the breeze in while keeping insects out. Tough triple layer vinyl roof resists mildew - Heavy duty grommets that prevent water pocketing and sagging Standard swing out hinged door on the right hand side and can be positioned where you choose.