Madoors system Blast Resistant Doors and High Range Blast Doors and Windows Due to the unique nature of some projects, a pre-engineered model is not always the best selection. Often, a custom design is required. That is where we come in. Our engineering and sales staff can help custom design a product to meet your most demanding applications. Pre-Engineered and High Range Blast Doors and Windows Models ,The doors are used for hazardous material storage, automotive, chemical, petrochemical, and pharmaceutical facilities. The Madoors Blast Resistant Doors Models are personnel-size 2-3/4" thick heavy-duty hollow metal doors. These doors are equipped with MAdoors's concealed single or multi- point latching pin design that is aesthetically pleasing, long lasting, and requires minimal maintenance. Both hinge models feature precision radial and thrust bearings that assure smooth operation and long life. These doors are for use where equivalent static loads are in the 3 to 20 psi range. All models are available in single and double leaf swings. Horizontal sliding doors are similar construction and load ratings are also available.