ADA Compliant: Yes Base Diameter: 18 x 18 Basin Interior: 16 x 12.5 Basin Shape: Square Depth: 4.5 Faucet Centers: 4 in. Faucet Hole Diameter: 1.13 Front - to - Back: 18.13 Side - to - Side: 18.13 Spout Hole Diameter: 1.13 Style: Traditional Type: Above Counter{Product Features Front Sloping