Liquip offer the 900mm (36″) Diameter Flat Sealed Cover and Frame. These are supplied with a dual port lid and two port covers (FC254/10).
Cover with dual ports, two port covers (FC254/10) and frame.
Cover sizes relate to clear opening of frame.
All covers have a standard load rating of C250 (25 tonnes).
Heavy duty D400 (40 tonnes) versions are available.