Profile: Protective Door Industries is in the business of producing steel door systems and window units. Our brand includes Sonicbar™. Our blast resistant doors and windows assure blast protection & dependable service under critical conditions for interior or exterior environments. Our Sonicbar® pressure-tight and fume-tight doors are engineered to assure sealing and reliable operations under conditions requiring either low or high pressure environments. Our protective doors are available in bulkhead, hinged panel and vertical/horizontal sliding types to provide protection from flooding.