ADA Compliant: Yes Base Diameter: 18 x 18 Basin Interior: 16 x 12.5 Basin Shape: Square Depth: 4.5 Faucet Centers: Single Hole Faucet Holes: 1 Hole Front - to - Back: 18.13 Side - to - Side: 18.13 Spout Hole Diameter: 1.38 Style: Traditional Type: Above Counter Width: 18-1 8{Product Features Front Sloping