Blind joint parts are specialized components used to connect and fasten aluminum extrusions at right angles, with the connection areas remaining hidden for a sleek appearance. These joints eliminate the need for visible brackets, ensuring a streamlined and attractive finish. They are particularly useful for fitting panels into grooves of aluminum extrusions, as well as for door areas or device inlets and outlets. Modifications to the aluminum extrusion, such as drilling holes on the sides, are required for installation. Dedicated joints are then used to achieve secure and aesthetically pleasing connections.