Some of the models have a 7' ceiling height, The floor kits are designed to work with the specific size of shed, these are designed to be customized, for tips on customization, please allow me to refer you to the manufacturer's customer service where they should be able to assist you with this. Here is the contact info: Best Barn Kits (Reynolds Building Systems, Inc) and their number is 800-245-1577 or visit them at http://www.barnkits.com/ContactUs.html