All sheds/ buildings are handmade and can be manufactured to any size doors and windows or without can be placed where they are most convenient to you at (no extra cost) Materials 13mm kiln dried tongue + groove cladding.(Nominal) 61x38 cls kiln dried framework (smooth planed) 3"x2" 61x38 cls kiln dried floor bearers (3"x2") 61x38 cls kiln dried roof joists(3"x2") 1" thick floorboards (planking) 4mm toughened glass (No chipboard/ plyboard or OSB used in our sheds/ buildings at all.)