Mail slots in walls can be a hassle to cover. There are a few different ways to go about it, and each has its own pros and cons.
The first way is to use a piece of fabric and staple it to the back of the mail slot. This is effective if the fabric is large enough to cover the entire slot, but it may be difficult to adjust if the slot gets smaller over time.
Another option is to use a piece of plywood and cut it to fit in the slot. This is more difficult because you have to measure precisely, but it’s easier to adjust if the slot gets smaller over time.
The final option is to use a mail cover. These are plastic or metal covers that snap onto the front of the mail slot.
They’re easy to install, but they may not protect the letterboxes from weathering or vandalism.
