This sink is constructed of solid high-grade fireclay material using high pressure casting, ensuring durability, longevity, and resilie Designed in Italy, Made in Italy Exterior 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″ Non Reversible Capable 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″ 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 side Possesses 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.