Stair tread with RH return nosing 1″ thick – 98448RR Call For Quote $59.86 Interior stair tread with right hand return View Product Catalog Stair tread with RH return nosing 1″ thick - 98448RR quantity Add to list Want a discount? Become a member. SKU: O984RH Category: Stair Parts Description Description Oak stair tread with right hand return nosing for open end stair systems. 1″ thick x 11-1/2″ from nose to back with 18″ nosing along side. O98448RR – 48″ Other widths can be made in our shop, ask a sales associate. Other wood species available by special order.