This Kaedra mounting plate has two openings. The 65mm x 85mm opening allows to install directly a 50mm x 50mm domestic socket, or recessed inclined PratiKa sockets (16A 2P+E, 16A 3P+E). The 90mm x 100mm opening allows first to install directly a recessed 16A (3P+N+E) or 32A PratiKa low voltage socket. This 90mm x 100mm opening allows also to install buttons or indicators lights (diameter 22mm) by adding an additional plate. It can be mounted on Kaedra enclosures with 103mm x 225mm openings. It is fixed by screws.