Archidpanel Exterior Grade MDF is not only Moisture-Resistant but is also engineered to have enhanced moisture resistance, making it suitable for exterior applications and other areas exposed to higher levels of humidity or occasional moisture. Its densified structure is forged with moisture fighting properties which make them suitable for varied and prolonged application in damp conditions. Exterior Grade MDF achieves its higher moisture resistance through special additives in the manufacturing process, which make it more suitable for some exterior and humid interior applications.