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 : 36" x 18 1/8" x 10"Inner Bowl Sizes : 13 3/4" x 15 3/8" x 9 7/8" ; 18 1/8" x 15 3/8" x 9 7/8"Standard 3 1/2" center drain. compatible with garbage disposalCapable 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 : 35 1/2" Top Width : 36" . This sink tapers from top to bottom by 1/2"Features an elegantly designed arch on front of the apronPossesses 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.