Aluminum alloy door frame is made of many kinds of metal. Resistance to erosion and corrosion resistance is better than iron and wooden door，so it can withstand wet water vapor, it is not easy to rust, Particularly suitable for use in the balcony, kitchen and bath room. Doors and windows profiles can be used three cavity or four chamber structure, General rainwater can be discharged through an independent drainage cavity outer, middle layer is provided with complete isolation of water into the cavity, effectively isolating the reinforcing steel cavity, protection layer of steel from corrosion.

Aluminum is stronger than wood or vinyl. For this reason, it is still the dominant choice in architectural and demanding commercial applications. Its strength also allows framing widths to be minimized, allowing for larger glass areas in aluminum windows and doors. Aluminum itself is a good thermal conductor; therefore most aluminum window manufacturers offer "thermal-break" products. In these designs, a structural insulating material is incorporated between the interior and exterior aluminum.

Aluminum is the most widely available lightweight frame material. Steel, the most common and oldest bike frame material, is approximately three times the weight of aluminum. Though generally more expensive than comparable steel frames, aluminum frames are still relatively inexpensive. Due to their durability, rust resistance, stability and low weight, aluminum frames can suit the needs of a range of doors and windows.

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