4" Lavatory Faucet can replace any lavatory faucet with 4" centers (mounting holes).Approved for use in all 50 states. Faucet is made with DuraPro underbody, a glass-reinforced resin that is spin welded to seal against leaks(this is superior to the standard snap together Celcon under bodies). The teacup handles are the latest style and are ADA compliant and designed to resist breaking. | Valterra 4 Lavatory Teacup Handles