Bainbridge Manufacturing, Inc. Plastic Hardware for Cabinets, Closets & Furniture Since 1960 Bainbridge Mfg, Inc is North America's leading manufacturer of plastic hardware for cabinets, closets and furniture. For over 55 years we have been designing and injection molding plastic hardware such as corner braces, shelf supports, drawer slide sockets, grommets, clips, caps, covers, plugs + much more! Our full line of more than 500 products includes anything plastic that is used while manufacturing (less)