Douglas fir is seen as a first-class wood for the manufacturing of sash, doors and windows. The wood is also used for a wide variety of products including general millwork, furniture, cabinets, veneer, vats, ship and boat construction, transmission poles and marine pilings, and for structural purposes including laminated arches and roof trusses. Structurally it is used in the form of lumber, timber, piles and plywood. Douglas fir is commonly used for building and construction purposes due to its extraordinary strength-to-weight ratio and availability in large dimensions. In India, it has been used in post and beam construction and is highly recommended for solid doors and door frames.