Traverse City Steel Structural Manufacturers 2464 Cass Rd HSS Industries designs, manufactures, and distributes quality Postal Products, specializing in centralized mailing systems. Postal Specialties, Mailboxes, Commercial Mailboxes, Horizontals, Verticals, Collection Box Units (CBU), Rotary Mail Centers, Post Office Boxes, Express Mail Convenience Centers, Indoor and Outdoor Parcel Lockers, Postal Stamp Vending Cabinets, Library Collection and Drop Units, Video Collection and Return Units, Drop Boxes, and Modular Rear Loading Enclosures. Traverse City MI Steel Structural Manufacturers HSS Ind www.hsspostal.com postal products postal specialties mailboxes hss industries parcel lockers po boxes post boxes postal Commercial Mailboxes centralized mailing systems horizontals verticals collection box units rotary mail centers express mail conveni postal products postal specialties mailboxes hss industries parcel lockers po boxes post boxes postal Commercial Mailboxes centralized mailing systems horizontals verticals collection box units rotary mail centers express mail conveni Business Reviews HSS Ind Testimonials