NDS provides service, new sales, installation and custom preventative maintenance plans for Automatic Swinging and Sliding Doors and Operators, Overhead Sectional Doors, Dock Levelers, Dock Seals and Shelters, Rolling Steel Doors, Revolving Doors, Optical Turnstiles, Security Products, Pharmacy Security Shutters, Gate Operators, Parking Security Gates, Hollow Metal Doors and Hardware, Bollards (Front Entry and Large Industrial), Air Curtains, Automatic Door Sensors and Mats.