Pentair AES developed these basins for our Fish Farm™ systems. They are rated up to 3 gpm. Molded of polyethylene. Only about 6 gallons are used with each cleaning. One-inch FNPT in both trough bottoms (inlet/outlet). Stand not included. Measures 38" x 20", weighs 12 lbs, but ships Oversize Exposed. Made in USA.