Schneider Electric AvatarOn cover plate E8331_DG is in color dark grey for switch with 1 rocker. Its matching mounting box can be recessed into the surface of the wall with flush type. The fixing mode of this device is by 2 screws. Being made of PC (polycarbonate) material, this cover plate is quite reliable and resistant. It is 86 mm in width, 86 mm in height, 21 mm in depth, with an embedding depth of 11.3 mm. And the product weighs 35 kg. And it features protective untreated surface treatment. The surface finish is glossy, delivering an elegant and high-end feeling to a room. This cover plate is SVHC (substances of very high concern) free too. What's more, it well satisfied the standard of GB 17466. It obtained CCC certificate as well.