Del Conca 90DUEMAS35 DUE2 35 Slot Master Display with No Tiles - This 35 Slot Display is for use with Del Conca DUE2 Tiles. Please note that tiles are sold separately. DUE2 is a 20mm thick porcelain stoneware collection by Del Conca USA. The collection is the right solution for any type of outdoor flooring and is hard-wearing, anti-slip, weather resistant and capable of withstanding heavy loads. Because DUE2 porcelain pavers are available in a range of sizes and material effects, it is a great alternative to the usual natural stone pavers or wood decking around pools.