Vevor Mailbox Through-the-Door Key Drop Box Dark Gray NewThe Vevor through the door key drop box is built for secure mail and key storage in homes, offices, workplaces, and schools. Its heavy duty steel construction features a rust resistant powder coated finish for long lasting durability. A rainproof flap, drainage holes, and rubber pads help protect contents from moisture. The combination lock and internal metal baffles add security, while the large slot and viewing window make daily use convenient.