Fi-Hoff Concrete is a PA Dot approved and NPCA certified precaster. Call for an estimate. We manufacture the following: - 48", 60", 72", and 96" diameter storm and sanitary manholes - Standard PA Dot inlets including Type I, II, III, and modified inlets (Type M, C, or S tops) - Custom square and rectangle vaults (valve vaults, meter pits, etc.) We also manufacture residential items such as step treads, step units, walk slabs, coping, and sills. We are also able to make custom pieces as per your specs.