Flex-Fence - Decorative Versa Fence Louver System 4' Kit includes: 2 pieces of 4' rails, 22 brackets, 1 operating bar, all fastening hardware, and instructions Maximum length of lumber for slats is 4' Made with recycled PVC Can be used indoors and outdoors for vertical or horizontal applications Dimension Guide (see 2nd photo) helps you determine the number of boards and Flex Fence Kits you will need