I used this cover for the 12x18 Korodo Solarium and it worked out perfect. Once we laid out the cover and got it lined up, it took 3 people about 10 minutes to install. The cover is made of thick durable material and you can still use the solarium when it's on. I have 3 neighbors with the same solarium and they were helping me put it on, all of them said they would be ordering this product for their solariums. I have been 110% completely satified with Shelter Logic and the Sojag products and warranty.