ResinDek® NEW XLD50 and LD50 ½” panels engineered for performance and savings now available! Cornerstone Specialty Wood Products, LLC manufactures mezzanine flooring/decking for DC’s and Warehouses that support 1,000-4,500 lbs pallet jack limits with several finishes. Brand names include Diamond Seal®, Invisi-Loc®, Xspan®, with LEED® credit options.