Welcome to Rhino Box, your home for the guaranteed best quality sub-woofer enclosures. We manufacture our sub-woofer enclosures at our state of the art facility in Houston, Texas, USA. Which means all of our products are made in America with great attention to detail, precision, and quality. All of our boxes are nailed, glued, and sealed again to insure durability and sound quality. "Nothing hits harder than a Rhino.