We live in a Flat that has an external door with a letterbox. All mail is delivered to the main entrance where it is sorted into our mailboxes, therefore the only mail posted through our letterbox is junk mail.
We can't alter the external appearance of the door as the building is listed, but I want to seal the letterbox therefore stopping the posting of any mail through it.
I did have an idea that someone might sell an expanding bolt so I simply placed the bolt in the middle tight in behind the flap and then tightened with a spanner expanding the bolt and thus sealing the letterbox. As far as I know no such bolt is available.
Any ideas on how to achieve my aim?
We can't alter the external appearance of the door as the building is listed, but I want to seal the letterbox therefore stopping the posting of any mail through it.
I did have an idea that someone might sell an expanding bolt so I simply placed the bolt in the middle tight in behind the flap and then tightened with a spanner expanding the bolt and thus sealing the letterbox. As far as I know no such bolt is available.
Any ideas on how to achieve my aim?