Under floor electrical installation has insert having a levelling frame that is secured by screws

摘要

The under floor installation unit has a main frame [7] set into an aperture and on top of this is a levelling frame [2] that has a central cover plate [3] secured with small screws. Set into the base of the aperture is a fixing plate [8] that has fixed studs [6]. The levelling plate is adjusted using screws set at each corner [5].