Flat angle lower part, inside corner/outside corner, for floor duct closed BKGD 300x60. Flat angle lower part for floor duct for dry rooms indoors with dry-maintained floors. The lower part consists of a floor trough sheet with pre-assembled side profiles and is supplied including equipment supports, duct connectors and assembly protection cover. The pre-assembled floor stop profiles have an adjustment range between 0 - 25 mm and correspond to the possible floor covering thickness to be applied. Tested according to DIN EN 50085-2-2.