Efapel LED diffuser

I changed my LED light diffuser on my staircase for a flatter, white one. The original diffuser sticks out a lot from the wall, so I decided to reduce it and make the light much more contained.I've included links to the original light mechanisms so you can see their original measurements.https://www.efapel.pt/es/productos/logus-90/otros-mecanismos ref: 21361 https://www.efapel.pt/en/products/logus-90/other-mechanisms ref: 21361