Sealing up a mail slot?

Sealing up a mail slot? mail slot insulation ABB Rotor Slot Insulation mailbox slot for door How To Install A Mail Slot In A Garage Door · How To Fit A Letter Box · Installation

mailbox slot for door I know you said it was installed by a contractor is it the draft dodger insulated mail slot? yours looks better than anything they're

mail slot drop box ABB Rotor Slot Insulation The DraftGuard® Deluxe letter box slot with it's precision rotating open-sided hollow cylinder ensures a better insulating value The cylinder consists of