Secure Manhole Covers, removable iron or polypropylene covers, creating sealed chamber barriers to shield shaft openings for drains or sewers. Manhole Covers, drain seals and frames along with keys enabling access. A variety of designs from leading brand Clark Drain, Glen Castings, and Egrid. Keys from Faithfull to lift and secure. Polypropylene, iron or galvanised steel designs with rubber gasket seals.