Aluminum: Aluminum door frames best suit sliding doors, although they can also be used on door with frame for regular swinging doors.. Aluminum door frames undergo electrophoresis treatment and are anodized and powder coated for longer life. These frames are typically made from aluminum extrusions. Mostly fitted with glass doors of 4mm to 6mm thickness, they can be framed over other doors like PVC.
Hollow Metal: Hollow metal frames are made from 12-, 14- and 16-gauge cold-rolled or galvanized steel. These are designed in different forms like knocked-down, welded or cut-and notch and styles include double egress, communicating, single rabbet, equal rabbet , and cased opening frames.
Stainless Steel: Stainless steel frames are strong and sturdy compared to other frame types. These are made from 14-, 16- or 18-gauge steel. These frames are aesthetically pleasing, corrosion-resistant, and can withstand fire for up to three hours. Stainless steel frames can be used indoors as well as outdoors.