4x6 Single Door Shiplap Apex Shed4x6 Single Door Shiplap Apex Shed The 46 Apex Shed provides 3. 9m of storage space with a single door entrance. Constructed from sustainably sourced, pressure treated 12mm shiplap timber, it resists rot and insect damage naturally. Interlocking tongue and groove boards form an effective weather seal against rain and wind. The reinforced T&G door with double Z bracing guarantees rigidity, whilst zinc coated steel hinges and a heavy duty pad bolt