One method is to use furring (battens, strapping) fastened vertically to the wall. Clay tiles were used as furring behind marble and ornamental plaster and for interior partitions. Wood furring strips typically measure 1 x 2 or 1 x 3 inches. The material is commonly used in floor arches, fireproofing, partition walls, and furring. The only archaeological evidence of furring found to date is on the Princes Channel Wreck. From craftsmanship of most advanced wearing products were those of furring, shoemakers and tailors. Furring refers to the process of installing the strips and to the strips themselves.