Commercial Concrete Products, Inc. manufactures 2 different types of parking bumpers. The most popular by far is the double-sided parking bumper which is manufactured in 2', 3' and 6' lengths.
Our second type, and not so far behind in popularity, is the single-sided parking bumper. It is manufactured in 6' lengths.
See our pdf drawings, presenting dimensional details and profiles of both the double-sided and single-sided parking bumpers.