Ever need to form part of a hole in the base and part in the riser? Here is your answer. When the job is complete, bolt the hole form back together and use as a standard round.
Using the same fabrication methodology, literally any custom doghouse configuration is possible. We can also mold any hole form with a flat on the top, bottom or both to make the hole flush with the floor, achieve a minimum cover specification or accommodate a large diameter hole within your form/structure height.