Blank Slate Climbing Intensive 105 Climbing Trainer, Natural 105 Bolt-on holes for Superior workouts with more options for placing your Holds, Hang boards and Accessories, allowing you to add more to your exercise routines! Superior 100% hardwood plywood designed for better performance. Board size is 36 x 12 Tnuts are pre-attached, two rows are removed for mounting the J-bars Owners Manual and Assembly Instructions are on our website.