TOPMOUNT Installation: Easy above-counter installation without much modifications of bathroom cabinet and countertop. PRACTICAL Design: 1 3/4" Rear-set Drain Hole design frees up cabinet space ( Pop-up drain not included). Single faucet hole predrilled, no need for extra countertop space for faucet installation. LUXURY Style: Contemporary oversized design; Premium vitreous china that is double-fired and glazed to ensure durability, lasting beauty and stain-resistance. SIZE of Sink: Exterior Dimensions: 24.0" (wide) x 18.1" (front-to-back) x 4.3"(total height). Interior dimensions: 21.1" (wide) x 12.2" (front-to-back) x 3.15"(depth) Post-sale SUPPORT: 100% Money Back Guarantee within 90 days. If there is any problem, please feel free to contact us by email without hesitation.