The JéWé Picture trim pine wood is for making a painting or photo. The Picture trim is untreated and knot free. The dimensions are width: 0.35 inch/ 9 mm, height: 0.27 inch/ 7 mm, length: 8.86 feet/ 270 cm. Advise is to prime before mounting. Maintenance depends on the chosen finish. The Picture trim has Quality mark: PEFC.