Rec'd my order very fast and in very good condition. Researched installation of these sails extensively before we installed. We ended up attaching to the bottom of our eaves, which are visible (not enclosed) and set two posts in concrete on the other side. Attached well, but due to the size of this one (18' x 18'), it does sag just a little in the center, despite tight tensioning. So far is handling the wind on the south side of my patio pretty well. Have had installed for 2 weeks now. I would most definitely recommend this product and this shipper.