8x6 Shiplap Apex Shed Double Door With Window8x6 Shiplap Apex Shed Double Door With Window The 8x6 Apex Shed with Window delivers 7. 8m of storage with convenient double doors and generous internal height for easy access. Built from prime grade 12mm shiplap using sustainably sourced, kiln dried European timber, the interlocking tongue and groove boards provide excellent weather protection. Double Z braced doors ensure exceptional rigidity, whilst pressure treatment guards against rot and