Review on Sunco Lighting Construction Downlight Electrician Industrial Electrical by Linda Wood

I bought these to add LED lighting to the basement of an 1840's house with 4 x 5 floor joists - 6 inch boxes will not fit. This is the ideal solution (although the nails are not driven, drilled and screwed into 180-year-old wood, as is usual). I needed another one which was $17 at a big store.