郵便受けに新聞などが入った状態だと外気がどんどん室内に入ってしまいます、それが氷点下２０度以下いもなる真冬だと室温もどんどん下がってしまいます。ですから屋外に郵便受けBOXを設置する方も多いのですが、寒い冬の朝に新聞を取り出だしに行くのは億劫なものです。

そこで気密郵便受けです、室内側にBOXを作り小さな気密ドアを造りそれをあけてから新聞や郵便物を取り出します、屋外側はステンレス製のデザインの良い受け口です。

When newspapers etc are in the mailbox, the outside air goes into the room steadily more rapidly, when it is in the middle of winter when it is below freezing temperatures, the room temperature also goes down rapidly. So there are many people who set up a mailbox BOX outdoors, but going to take out the newspaper in the cold winter morning is a big deal.

So there is an airtight mailbox, making BOX on the inside of the room, making a small airtight door, opening it and taking out newspaper and mail items, the outdoor side is a good reception for stainless steel design.