Where a perfectly level paving 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 to be removed at any time to allow for on-going maintenance. All Ryno Stackable Pads are suitable for use with all conventional paving systems. Key Features Thickness: 10mm. Diameter: 150mm. Ideal for applications where ultra-low support height is required. Stackable to 6 units high, providing support height of 60mm. Manufactured from polypropylene.