Quite frankly, the Timberlane Louver sets the standard by which all other louvers must be measured. Whether fixed or operable, each of our louvers is sanded to a glossy round finish, then hand-fitted into a mortise so it can never flip in the wrong direction or fall out. Set with just enough "float" so they can expand and contract in weather conditions, Timberlane Louvers, will retain their good looks and charm for decades to come.