Undercounter Basin with overflow without tap platform fixings for installation in wooden consoles included Interior Dimensions: 18-7/8" x 12-1/4" This fixture comes standard with the special WonderGliss surface finish. Sanitary ceramics with the WonderGliss finish will remain clean and attractive for a long time to come. Thanks to the coating which is fired into the ceramics, water immediately contracts into drops and drips off, taking any residual substances (e.g. lime) along. The result less polluting deposits, less cleaning work, more fun in the bathroom!