The new doors meet the strictest safety and security standards set by the USPS but are still lightweight enough to open easily and smoothly for postal customers. There are windows so that employees can see what’s happening from either side of the door. They feature safety glass, heavy-duty bumpers, security bars, safety bolts, tamper-proof fasteners and hardware, hinge guards, steel internal reinforcement, and directional signs to guide their use.

The doors were developed through rigorous testing under punishing conditions, including both human use and industrial vehicle traffic. As a result, the new doors will be strong enough to serve the public for many years to come.