Matte Black Sliding Door Passage Set I Mucheln Duke SeriesUnify your styling with the Mucheln Duke Series sliding door handles. Architecturally designed with sharp lines and an ergonomic pull, the Duke range is sure to impress. This matte black Passage Set is ideal for all sliding doors up to 50mm. When installed onto a cavity slider door which slides all the way back into the cavity, we recommend installing a concealed flush pull to the edge of the door.