The 16" slider was a replacement for the 17" slider (I couldn't find the 17" slider online). The box is relatively large and the contents are heavy. The only criticism is that no installation instructions were included. Since the new slider was 16 inch to replace the 17 inch slider and the manufacturers were different, this created a problem. Also, the front of the drawer was flush with the cabinet; There was little or no room for maneuver. That meant lots of measurements were taken, plus a small adjustment after initial installation. After final setup, the slide works great and I am very happy with its performance.