Casainc Fireclay Sinks is Kiln-Fired at High Temperatures of 2200°F and Features Solid Core Construction That Makes it Highly Resistant to Impact and Thermal Shock. At The Same Time, Using Advanced Glazing Technology to Create a Durable Non-Porous Finish, Against Scratches, Rust, Stains and Will not Yellow or Fade Over Time. These Properties Make Casainc Fireclay Sinks a Superior Choice Compared to Alternative Materials Such as Cast Iron Enamel And Ceramic Sinks Which Can Easily Chip or Crack. The 27 inch Fireclay Sink Gives You Plenty of Usable Space for Filling Pots, Stacking Dishes, and Preparing Meals.Features-Fireclay Sinks Boasts Extremely Durable Refractory Clay Material and Sturdy Construction, Which Can Resist Spalling and Impact Damage.-Fireclay Sinks are Reinforced with Glaze to Lock in Its Beauty and Create a Surface that is Non-Porous and Thick, Making it Completely Resistant to Abrasion, Rust or Scratches.-The edge of the undermount sink is hidden under the countertop for a more beautiful appearance-Casainc Fireclay Sinks Certificated by cUPC, Anti-Peeling, Anti-Fouling, Prevent Sink Discoloration, Chips, Cracks.-The deformation degree is controlled within 2.8mm, and the edge of the sink is not easily bent and deformed.-Packing: Shaped Foam and Carton Packaging to Prevent the Sink from Being Damaged During Transportation and to Reach You in Perfect Condition.SpecificationPackage Includes: 1 x 27 inch Sink Bowl; 1 x 3.5" Drainer; 1 x Bottom Grid.Overall Product Dimensions(in.): 26.65 x 18.77 x 9.84 in.Estimated Inner Dimensions(in.): 24.29 x 15.78 x 8.89 in.Opening Size (in.): Recommended to measure according to the actual productProduct Weight: 55.11 lbsInstallation method: UndermountFinish: Glossy White/Matte Black/Matte GrayMaterial: FireclayShape: RectangularDrain Hole Size: 3.5 in.