JSG Oceana 005-016-022 Cubix Vessel, Black Nickel Scratch, stain, & thermal shock resistant - iapmo certified & upc/cupc approved - made in the U.S.A Outer rim dimensions: 15.75" x 15.75" - diagonal dimension: 19.625" - depth: 4" - height: 4 1/2" Rim: flat - glass thickness: approximately 1/2" - vessel tolerance: +/- 1/2" Drain width: 1 3/4" - pop-up drains available - installation: vessel installation instructions included