brand new Stainless Steel Deck Fill Water 1 1/2" Warranty, which is designed for strength and is highly polished finish for outstanding corrosion resistance. It has 1 1/2" opening, and connects to 1 1/2"hose. Cover has a chain to stop from losing overboard and comes with key. "Water" is on the cover. A= 1-1/2" B= 3-1/4" C= 3"