The hood runs the full length of the slide allowing easy access to the back of the drawer which was my main goal. It comes with enough screws for 3 screws in each section, 12 in total. I used plywood for these master boxes and the frame was spruce and the wood is quite soft and the screws held up well. The screws seem to be too small to support the weight, but they did the job. At around $10 this is a very good price to accommodate £100 and still get full extension, especially up to 14 inches. The installation instructions seem very complicated, but my method was simple. 1/8 inch. I used 2 blocks cut to size to position and hold the clasp. I marked the holes to drill the starting hole. Easy and fast.