Franke USA UOSK900-18, Stainless Steel Left bowl measures 18 1/2 inches x 14 1/8 inches x 9 inches Right bowl measures 15 3/8 inches x 14 1/8 inches x 9 inches Larger left bowl gives you flexibility for your kitchen needs 18 gauge stainless steel construction for under mount installation Under mount installations for solid surface countertops Professional installation recommended for this application Template and hardware included Limited Lifetime Warranty