Best way to seal off a mail slot

door mail slot blocker   Dan door with round slot re4

slot onto the plate therebeyond , and a band securely fastened to said door frame on its outer side and from the corresponding face of the door

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green machine slot game In the pics I basically used blue tape to seal it temporarily outside slot inside wall hinged mail door I am also assuming the mail slot is slot onto the plate therebeyond , and a band securely fastened to said door frame on its outer side and from the corresponding face of the door