18ft x 16ft (5.35m x 4.75m) Ralph 44mm Wooden Log Cabin (19mm Tongue and Groove Floor and Roof) (18 x 16) (18x16)- The Ralph Log Cabin features high grade 44mm kiln dried planned logs, these interlock with a 4 chamfered notch joint system to ensure a tight and secure fit. The cabin roof is constructed with pressure treated roof joists and 19mm tongue and groove roof boards, this is covered with a green mineral felt to ensure the cabin is water tight. The flooring consists of 19mm tongue and groove boards raised on pressure treated bearers. The Ralph Cabin features 4 windows to allow generous light and airflow into the cabin. Construction Points: Opening Windows | 3mm Toughened Glass Windows | 44mm Planned Kiln Dried Logs | 19mm Tongue and Groove Floor and Roof | Fully Glazed Double Doors | Full Fixing Kit Including Green Felt | Reverse Apex Roof Design | Joiner Made Windows and Doors | 3 Level Lock with Brass Handles | 58mm x 44mm Framing | *Images Show 16ft x 12ft Model It is essential that our log cabins are assembled strictly in accordance with the instructions supplied on a firm and level base constructed from a suitably durable material. Our log cabins should also be treated as soon as is practical after assembly and then annually thereafter with an appropriate high quality preservative.