AnchorBar 46x60 Lip Chairmat, Deluxe Executive Series for Carpet up to 1" For use with carpets greater than 3/4" thick. High performance chair mat for intensive use such as multi-shift or big and tall applications. Includes AnchorBar perpendicular cleat system to eliminate shifting once in place. Protects against wear and tear from chair casters. Engineered for optimum clarity, high performance and a smooth effortless roll.