When I purchased my house, the shower did not have a door - only a flimsy plastic curtain. I looked online to see the styles offered and especially included delivery and installation. And, Plumbing Mart had a lot of styles and also offered installation. I just called them and informed them of my measurements, and they arranged for someone to come out to my house to install it. I am very happy with my choice and the installation. The product also had a 10 year warranty for the parts, and I only had to replace the plastic sweep once without charge.