Hinge #4, 14 gauge, black powder coated. This one's for taller doors, goes between sections 4 and 5 where you need even more offset than a #3. Not every door uses a #4, only doors with five or more sections need one. If your door has four sections, your highest numbered hinge is a #3 and the top fixture handles the rest. Powder coat for corrosion resistance. As always, match the number stamped on the old hinge. Putting lower-numbered hinges in higher positions causes binding and premature track wear.