Businesses in the wood and wood products category supply, process or manufacture timber and items made from wood. They may sell sawn timber, boards, veneers, mouldings and sheet materials such as plywood, MDF and chipboard for use in construction, furniture making, joinery and general repair work. Some businesses specialise in particular species or grades of timber, or provide treated, kiln-dried or otherwise prepared materials. Services can include cutting timber to size, planing, machining, laminating, treating and finishing wood. Manufacturers may produce doors, windows, flooring, furniture components, packaging, fencing, garden products or other wooden goods. Customers range from builders, tradespeople and manufacturers to householders and designers. Businesses may also advise on selecting suitable materials, stock reclaimed or engineered wood, or arrange delivery; the products and services available depend on the supplier's specialism.