Modular frame cover, ZS 55, OT 80, hfr, labeling field, graphite black. Frame cover for trunking, modularly stackable with a combination distance of 71 mm, flush-mounted to the top of the trunking. Designed to accommodate central plates, covers, rocker switches, or adapter frames measuring 55 mm. Tailored to the outer contour of the trunking to reduce dirt accumulation and facilitate cleaning. Suitable for use with stackable device boxes for trunking, featuring a reduced installation depth for a flush finish with the closure contour of the trunking. Can be combined with a socket cover for trunking via an optional intermediate piece. Integrated labeling field for mounting on the installation device or device box, compatible with labeling tapes.