The Attic Tent is designed with non-corrosive, heavy-duty zippers that allow easy access to an attic while keeping harmful insulation and dust particles in the attic. This improves indoor air quality and keeps the insulation off your floors. Any home that has an attic access within the conditioned space should have an attic tent installed. It is designed to be an air transfer barrier between your attic and your living area. This is the same principle behind storm doors and windows.