I'm trying to find a black iron letter box/plate (whatever the proper term is) for the outside of our door - but we need one with a flap on the outside. Being very close to the road, when it rains, passing traffic sploshes the rain up our house and it comes in through the letter box! So we thought perhaps one with a flap would prevent this. The only ones I've seen on the interweb are modern shiny black ones. Any ideas? Ta.