Had to return them. Like numerous reviews stated, the base is very small and rectangular, standard electrical boxes (Canada) are circular, 4" across. Cannot mount unless jimmy-rigged with back plates or something. My electrician said they're also not CSA approved and felt our new build inspector would not approve them if they noticed, especially with a creative install. Seems people in Canada had success with them, buyer beware I suppose. But they're pretty and stick out nicely over a surface-mount medicine cabinet. Return was painless.