Hinged Manhole Cover and Frame

The Hygrade Products range of 600mm hinged manhole covers and frames offers a solution to all hinged access cover requirements for Class D400.

The MAESTRO carriageway cover is sealed for wastewater and approved by Watercare Auckland.

The MAXIMO is an 800mm opening hyspec carriageway cover offering maxiumum safe access to secure sealed networks.

The TWINO is a high performance Class D400 Hinged Access Cover system. Available as standard, locking or vented option.