8ft x 4ft Tanalised Dog Kennel & Run (Exercise Pen). 13mm Tanalised Pressure Treated Shiplap, 8ft x 4ft x 4ft. Pressure Treated timber protects against rot, fungal and insect attack. We only use the best quality timber sourced by our in-house specialised team, this together with the finest craftsmanship make our products stand out against the competition. Customers are more than welcome to come in-store to view products and see the manufacture process for themselves.