Many of the commercially available hardwoods can be used for cabinets, furniture, mouldings and other millwork -- it's simply a question of taste, preference and availability. America's temperate climates produce forests with hundreds of hardwood species -- trees that share certain biological characteristics. Although oak, maple and cherry all are types of hardwood trees, they are different species. Together, all the hardwood species represent 40 percent of the trees in the United States. Click the doors for some information on common wood species (and Rigid Thermofoil) used the cabinet business.