ROMOLD chamber covers are specially designed for use with ROMOLD plastic chambers and guarantee the fastest possible assembly as well as a shift-proof fit for the cover. Class A 15 and B 125: installation directly on the system chamber part using ROMOLD frames (DN 500, DN 625 and DN 800). Class D 400: installation with ROMOLD cover with support flange on system chamber DN 500, DN 625 and DN 800 or with all diameters with load distribution ring (BARD) indirectly in the road foundations. All commercial self-level-systems are also compatible with ROMOLD chambers. This prevents damage to covers and frames.