Brett Martin 450mm X 350mm Inspection Chamber Manhole Reducer Ring
Designed to reduce the clear opening from 450mm to 350mm.
Provides restricted access for adoptable inspection chambers
Meets the requriements of Sewers for Adoption 7 (SfA7)
Should be fitted to all PPIC chambers exceeding 1.2m deep.
Unique clip allows ring to snap into the frame
4no screws for permanent fixing
This item is compatible with the frame of the following manhole covers:
