Where a perfectly level paving or decking area is required on a flat surface, such a roof area with 0 fall, Ryno Stackable Pads provides a simple and cost effective solution. Ryno Stackable Pads allows for consistent drainage, as well as allowing the paving or decking to be removed at any time to allow for on-going maintenance. All Ryno Stackable Pads are suitable for use with all conventional paving and decking systems. Features Thickness: 1mm. Diameter: 150mm. Manufactured from polypropylene. Compatible with RPS10 and RPS15, for use where fine height adjustment is required to compensate for imperfections in the area that is to be paved or decked.