Brawn Backpackable Folding Sluice Boxes processes more gold in less time than conventional hungarian riffle sluice boxes. This over under design means you don't have to classify your material. Each uses two gold-catching louvered decks. This allows you to clean out the upper section seperately, as most of your recover will be in the first section of the sluice. Less down time equals more gold! Water-pressure-drop technology allows precious metals to fall into the twin riffles, where they can be easily recovered on the ribbed gold catching carpet.. Twin nugget traps catch more gold, resulting in excellent gold recovery of coarse gold. Lightweight marine-grade-aluminum design enables you to transport your equipment more efficiently and set up anywhere your adventures take you. Three-way fold. Packs easily into a backpack. Made in USA. SLUICE SPECIFICATIONS: 48' B/P Folding Sluice Unfolded: 48'L x 13'W x 10'H. Folded: 18.7'L x 18.5'W. 18' Wide Flare 10' Sluice at the top 13' Sluice at the bottom