Appears to be very well made. I replaced a ceiling light with a ceiling fan. While the photo only shows an installation where the box is centered, lights/boxes are usually next to, or fastened to, a truss or joist, not centered between. Regardless, this product works for either application. This product saved me having to crawl up into my attic, remove insulation and either fit a wooden brace between two trusses or purchase a special box to screw solidly to the joist. It took me minutes to install this unit. My only concern or critique is that the barbs on each end might be slightly longer to pierce the wood deeper for a better grip. I may be concerned about nothing but if I were to improve the product that would be my only suggestion.