Range Feeder with locking lid helps prevent wind blow-away and is practically waterproof! Locks have been built into the lid, which now snaps into lock depressions in the body which eliminates the lid from blowing off. Ideal if you live in an area where there are strong side winds. This helps to prevent the feed from getting wet and blowing out. The body is constructed out of heavy-duty polyethylene plastic material, with re-enforced ridges all the way around the sides. This allows the unit to easily handle 300 lbs. of feed. Feed adjustments from the pan to the body eliminate metal legs. It is now possible to adjust the feed level directly from the pan. This has been made possible through the newly designed integration of the pan and body. This allows you to mount the unit in order to adjust the feed level height as needed.