For finishing a pocket door frame opening. Cut to length and install, no special cutting necessary. Pre-sanded, factoryprimed and ready for painting. In addition to making a perfect companion to the Johnson 1500 series pocket door frames,the 1510 Jamb Kit will enable builders or DIY'ers to install the jambs according to our recommended instructions ensuring trouble free installation and operation. Size: 36" x 80" x 4-9/16".