The High Tech Western Sifter was specifically designed for sandy, gravely soils typically found in the Western states. It also works ideally with peat moss. This sifter is built from 100% aluminum, is lightweight, and built to last. The bottom is 6 inches wide by 8 inches long, tapered out on all sides to approximately 8 inches wide by 10 inches long and is 2 ½ inches high. The bottom is built from solid aluminum plate, not screen and is welded solid. It is truly one tough sifter you won’t be blowing the bottom out of anytime soon.