We purchased this sliding door shower enclosure as our shower base/curb was custom built so we didn't need a shower base.  I believe a fiberglass shower base can be purchased for this enclosure if needed.   We were extremely happy to find this enclosure on Wayfair after several months of searching for a premade glass shower enclosure that included a sliding door. The enclosure is beautiful and the sliding door is quiet.  My husband did the installation and other than the installation being a two-person job because of the weight of the glass for the longer wall, he said it went very smooth.