PROLINE™ Frames are a roll-formed, robotically welded design made of 12-gauge steel with solid steel, fully welded corners. External sides, covers and doors are 16 or 14 gauge steel. Standard door bars increase strength and rigidity and allow for an extra mounting surface. Seamless foam-in-place gasket provides a water-tight, dust-tight seal against moisture and contaminants. Gasket and latching system together ensure a solid seal with low closure force. Solid front doors equipped with a PROLINE latching system and flush bezel handle with defeater. Integral frame channels support the full weight of the subpanels. Galvanized full subpanel. Frames accommodate the 25 mm DIN standard and include rectangular holes for clip nuts and through holes for use with thread-forming screws.