Which of these is a common material used in elevator door construction due to its durability?

Aluminum is a common material used in elevator door construction primarily due to its durability, strength, and resistance to corrosion. Its lightweight nature makes it easier to handle and install compared to heavier materials, while still providing the structural integrity needed for elevator doors. Additionally, aluminum can be easily finished or coated, allowing for a range of aesthetic options that can fit various architectural styles.

In contrast, plastic, while lightweight, does not offer the same level of strength or longevity as aluminum and may be more susceptible to wear. Wood, while strong and aesthetically pleasing, can be prone to warping and deterioration over time, especially in environments with varying humidity. Glass, although visually appealing and used in some modern designs, is not typically known for durability in high-traffic elevator applications, as it can shatter or break under certain conditions. Thus, aluminum is favored for its combination of durability, functionality, and design flexibility.