> A front door airlock came to mind Some of the better houses in the north have a mudroom between the outer door and the inner door. Helps a whole lot in wint

> A front door airlock came to mind Some of the better houses in the north have a mudroom between the outer door and the inner door. Helps a whole lot in winter and during the rainy muddy times. Agree it would probably work well with this type of thing for deliveries.