MIFAB® WID exterior access doors are designed to provide convenient access to any exterior application, or anywhere that requires protection against air leakage and/ or water penetration. WID doors are also designed to serve the custom air handling equipment manufacturers, as well as mechanical contractors who field assemble built-up air handling systems. All WID doors are manufactured with extruded aluminum flanged frames and door panel frames. Door panels are satin coat steel with optional stainless steel and aluminum sheet inserts. Door panels are insulated and gasketed. WID doors can be manufactured in custom sizes from 12" x 12" to 96" x 96". Available in 1″, 1 1/2″, 2″ Insulation Thickness.