Drop box in fire rated corridor wall

Drop box in fire rated corridor wall mail drop slot 18 Gauge steel Painted white or brown Epoxy polyester powder coated Cam lock 2 keys Installation hardware included Slot opening 10 12” x 1 14” (267 x mail slot hood The Best Door Mail Slot of 2021 Reviewed Toolsstars• views · 6:09 · Go to Vertical

mail slot hood letter , she dropped the letter into the mail slot , and she even pounded all around the mail slot with the heels of her hands to make sure it settled down

mail slot insulation A letter box, letterbox, letter plate, letter hole, mail slot or mailbox is a receptacle for receiving incoming mail at a private residence or business  Since it is a corridor wall, the opening itself needs to be fire rated I'm looking for suggestions Most of the mail slots I find are more