Classroom Keepers 30 Slot Mailbox, Sturdy Corrugated Cardboard

I have a mailbox that has an open slot that I would like to add a sensor to to detect new mail As there is no flap that is opened when mail

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slot 826 Each mailbox is designed with an individual name tab for each slot Use tab to organize materials by student, subject or class period

slot modal 1000 Add a beautiful touch to your home while discouraging mail theft by installing a classic mail slot Mail slots with a spring-loaded cover prevent drafts,