The "joys" of living in snow country you just have to accept. Besides knowing your car's going to rust out there's the rural mailbox/snowplow interaction. Before I got involved in plowing roads I always thought it was the idiots driving the plow trucks that caused all the problems. Just like everybody else. Now that I'm one of those idiots I see things in the big picture and there's three parties that should get blamed. Obviously if a plow hits the box or it's stand, it's going down. No question about that. That actually is pretty rare. Most of the time it's the snow hitting the box that knocks it off. People are supposed to maintain their own boxes and use approved stands that swing and have enough clearance so the wing plow fits under the box. So a guy puts up a box, maybe on the approved stand, (most likely not) then wonders why his box gets knocked off some years later. Well the metal gets road salt just like your car, it rusts out. And that wood you used rots away. Now the third person to blame. The mailman! And here's where I had trouble with my new, Post Master General Approved made in USA box on a MNDOT approved stand. Mailman wasn't getting the door closed. Door hung down and the guy plowing by my place had to swerve to miss the door. Snow removel by the box is the home owners responsibility, few people bother. So I had to take the blower down there and clear the snow. (If you leave that snow the next time the plow goes by and the doors shut it'll probably lift the wing and hit the box. That's actually your fault but you blame the plow guy.) I really don't like running a snowblower, even a vintage one, so something had to be done. A scrap 2x4 keeps the door from opening all the way. A spring mounted so it goes overcenter pulls the door closed and a magnet inside keeps it closed. Turns out the latch inside those Post Master General approved made in USA boxes ain't worth a crap. If you live in snow country or just don't like wet bills when it rains you might want to mod your's too.