Modular frame panel, BR, ZS 55, OT 120, hfr, light grey. Frame panel for parapet duct, modularly alignable at a combination distance of 71 mm, cut concealed to the upper section of the duct. For accommodating central panels, covers, rockers or adapter frames measuring 55 x 55 mm. Adapted to the outer contour of the parapet duct to reduce dirt deposits and simplify cleaning. For use with alignable device boxes for parapet ducts, with reduced installation depth for flush closure with the closure contour of the parapet duct. Can be combined with socket panel for parapet duct using an optional intermediate piece.