Big-16" x 13", Small-14.5" x 11.26"How to measure a correct of grid for your sink! You have to measure inside bottom of your sink to get the right size of grid.Not top inside of sink. Usually inside top of sink 1 inches shorter than inside bottom of your sinkDesigned to conveniently fit into the bottom of the compatible kitchen sinkSafeguards your fragile dishes and protects the enameled surface of your sinkSoft Protective Bumpers Prevent ScratchingHow to measure a correct of grid for your sink! You have to measure inside bottom of your sink to get the right size of grid. Not top inside of sink. Usually inside top of sink 1 inches shorter than inside bottom of your sink. With clean lines and sleek shapes, Starstar kitchen accessories provide everyday efficiency with style. Constructed from premium stainless steel, this bottom grid protects your sink against damage from daily use and improves draining by keeping dishes elevated. Each grid is cushioned by soft protective bumpers to prevent scratching. Experience Starstar Quality, down to the details