Upper part of the tray for the BKB300 floor duct brush strip, 1 m long. Upper part of the tray with a coverable brush strip for the floor duct for dry rooms indoors with dry-cleaned floors. The upper part consists of an upper part of the tray sheet and a long-side floor stop profile including brush strip cover and a brush strip that can be inserted separately into the lower part of the duct. The floor stop profile and the brush strip can be adjusted to the possible floor covering thickness of 3 mm. The electrical connection of the upper part to the lower part can optionally be implemented using grounding springs. Tested in accordance with DIN EN 50085-2-2.