You can install with confidence, knowing that Delta faucets are backed by our Lifetime Limited Warranty. Delta WaterSense labeled faucets, showers and toilets use at least 20% less water than the industry standard—saving you money without compromising performance. 3-hole 4 Inch installation Metal pop-up ADA Compliant Fittings are ½ inch NPSM with 4 inch spacing Single Handle Centerset Bathroom Faucet