All hinges, handles, striker plates and hardware are zinc coated for corrosion resistance. The door hinges are heavy-duty piano hinge material using stainless steel pins. The housing and doors are made from corrosion resistant steel and are finished using a textured powder coat process. The finish is resistant to humidity, salt spray, fog, ultraviolet rays, abrasion and chemicals. Standard powder coat colors are Red and Black. Optional colors are available.