In this manner, cover 116 serves to protect electrical wiring which is disposed within interior cavity 27 and to prevent debris, such as dust or plaster, from collecting within interior cavity 27, which is highly desirable. [0119] Support block 119 is a solid block of material which includes a top wall 126, a bottom wall 127, a front wall 129, a rear wall 131, a first sidewall 133 and a second sid