5/4 x 6 Mahogany Decking Board (20') is a premium five-quarter (5/4) tropical hardwood deck board, planed to approximately 1" actual thickness and 5.5" width, commonly used for horizontal deck surfaces, dock decking, and exterior millwork. The dense, tight grain of genuine mahogany provides exceptional durability, natural moisture resistance, and a beautiful reddish-brown appearance that accepts stain or clear finish easily. • Species: Genuine or Philippine Mahogany (Lauan) • 5/4 nominal thickness (approx. 1" actual) x 6" nominal (approx. 5.5" actual) x 20' • Dense, tight grain pattern with natural reddish-brown to reddish-purple color • Naturally resistant to decay, insects, and moisture for exterior applications • Suitable for decking, dock decking, exterior millwork, and marine use • Accepts oils, stains, and sealers readily for a premium finish • Kiln-dried for dimensional stability • Janka hardness: ~900–1,100 lbf; excellent workability