Since 1935, National Guard Products has been manufacturing the finest weatherstripping and threshold products, as well as a lite kit and louver line for steel and wood doors. Today, we are your complete source for traditional door seals, door thresholds, gasketing, louvers, sound seals and door bottoms, flood shields, continuous geared hinges and our new sliding door hardware! We use the latest technology for positive pressure products including Gap Solutions for Fire Doors, Edge Sealing Systems (Category G) ) for (Category B) wood doors to comply with International Building Code (IBC). We make it easy to find the products you need with over 20,000 products in our online database, we're sure you'll find the right match in minutes.