Extremely strong, durable BUCKHORN Polyethylene Structural Foam Stacking Hoppers will not bend or buckle when fully loaded up to 150 lbs. Constructed of 100% high-density polyethylene with 1/4" thick walls for superior strength and rigidity. Will not rust or splinter and are impervious to most industrial chemicals and detergents. Withstand temperatures from -30° to 150°F. Stackable to save space. Order hoppers in carton quantities specified, priced each. ISO-9001 certified. Made in USA.