Krantz Recovered Woods introduces Reclaimed Antique Longleaf Pine prefinished wood salvaged from lumber and beams in America's pre-1925 buildings. The nail holes and bolt holes have been plugged and the wood has the marks of 80+ years of use. The 3 mm (approx. 1/8") thick reclaimed Antique Pine is laminated to a solid 7-layer plywood base, then tongue and grooved on all four sides, sanded and pre-finished with a very durable, clear aluminum-oxide finish. Pictured pine is finished with a brown stain. Wood is packaged in boxes, with individual flooring board lengths from 1' to 7' and can be installed on a concrete slab foundation (even below grade) or a raised foundation.