With the most colors, designs and durability, BLANCO has been the Leader in granite, granite-like and composite sinks for more than three decades. Our experience is your advantage. SILGRANIT - unequaled in beauty, unmatched in color versatility.Features:Required outside cabinet: 21"80% solid graniteHeat resistant up to 536°FUnsurpassed cleanability backed by industry leading 7 patents!Resistant to scratches, stains and all household acids and alkali solutionsTemplate provided with approximate 1/8" revealUndermount clips includedAssembly Required.