When fire rated doors and frames are required, Fib-R-Dor has the solution. Fib-R-Dor fire rated door systems meet and exceed both neutral and positive pressure fire rated labels. Available with 20, 30, 45, 60 and 90 minute labels. Fib-R-Dor utilizes a combination of unique manufacturing techniques and fiberglass technology to create a panel that is beautiful, cleanable and durable. The entire exterior of the door panel is molded fiberglass with a permanent bond to the core material, ensuring a beautiful, durable, low maintenance door that will last an extremely long time. Fib-R-Dor door systems are designed for use on interior and exterior applications, and can be equipped with virtually any hardware configuration required. Standard colors are white, gray, brown and tan in a high gloss or pebble finish. Additional colors are available as an option. Neutral Pressure Fire Doors Fib-R-Dor corrosion resistant door systems are available with 20, 30, 45, 60 and 90 minute labels and meet the Underwriters Laboratories, Inc. “Standard for Fire Tests of Door Assemblies, UL 10B” and UL 305 Standard for Safety “Panic Hardware”. When doors are tested under the neutral pressure testing method, the test chamber is vented so the neutral plane is above the door. This scenario does not allow pressure to build-up in the room, so air actually enters the room around the door edges, reducing the chance of flames igniting the outside door and surface. Positive Pressure Fire Doors Fib-R-Dor corrosion resistant door systems are also available with 20, 30, 45, 60 and 90 minute labels by Warnock-Hersey with UBC 7-2-1997 and UL 10c NFPA 252 for positive pressure fire rated doors. Under positive pressure, the test is performed with the neutral plane 40” above the floor. This method causes hot gases to be forced out around the edge of the door, making it easier for flames to transfer to the outer door and surface. To prevent flames from transferring, Fib-R-Dor fire door utilizes intumescent seals. Intumescent seals expand under heat, filling the gap between the door and frame. The intumescent seals can be molded in during the manufacturing process or applied on the surface of the door.