This sink is constructed of solid high-grade fireclay material using high pressure casting, ensuring durability, longevity, and resilience to acids, alkali''s, scratches, and chippingDesigned in Italy, Made in ItalyExterior Dimensions : 39 1/2" x 18 1/2" x 10 1/8"Inner Bowl Sizes : 17 3/4" x 15 3/4" x 8 7/8" ; 17 3/4" x 15 3/4" x 8 7/8"Non ReversibleCapable of being installed via Under-Mount (countertop Over edge of sink), Top-Mount (countertop Under edge of sink), or Flush-Mount (countertop Even with sink)Bottom Width : 39" Top Width : 39 1/2" . This sink tapers from top to bottom by 1/2"Double bowl sink, giving you added flexibility to do tasks such as soaking dishes on one side while still having a usable sink on the other sidePossesses Extra-Thick fireclay walls of 1 3/8"Due to the organic nature of the fireclay, material dimensions may vary by 1/8" of an inch. We recommend having the sink on location to trace and measure for countertop and cabinet cut outs.