Defect Product , The defect may varies and differ in each one.
Hubbell offers a wide variety of configurations available in high-impact nylon and metal wall plates. Hubbell only offers the best grade of stainless steel type 302/304, which is 18% chromium, 8% nickel, and non-magnetic providing superior corrosion resistance versus type 430 stainless steel. When you specify Hubbell wall plates you can be assured of the highest quality materials providing extended life in the most abusive environments.
Smooth Metal 302/304 Super Stainless Steel 18% Chromium, 8% Nickel
For Commercial, Institutional, Hospital and Industrial
Contemporary smooth finish and contoured edges enhance installation appearance.
Smooth finish without recessed lines is easy to clean and maintain attractive appearance.
Satin finish hides fingerprint marks.
Non-magnetic for static-free requirements.
Remark - There is minor rust on the back of every wall plate. We can not do anything about it. Because it's left Hubbell USA just like that.