Highlights:1.Rainproof Design: Our through the door key drop box features a secure rainproof design with a large flap positioned in front of the delivery slot, ensuring the safety of important mail even during heavy rain. The bottom of the box is equipped with rubber pads and drainage holes to quickly remove any accumulated water, preventing mail from getting damp.2.Large Storage Box & Slot: The through the door drop box includes a 12 x 6.1 x 14.1 inch storage box, providing 0.59 cubic feet of space, capable of accommodating various sizes of items. The 1.9 x 10.2 inch (48 x 258 mm) slot is suitable for smartphones, envelopes, and small parcels.3.Durable Materials: Constructed from heavy-duty steel and coated with a rust-resistant powder, our through the door mail box is sturdy and durable. Its scratch-resistant surface design maintains an attractive appearance and enhances longevity. Equipped with a spacious visual window, sized 2 x 4 inch (50 x 100 millimeters), allowing you to easily view incoming mail at a glance. Without opening the mailbox, you can always stay informed about your mail.4.Combination Lock for Security: The use of a combination lock is more convenient, eliminating the hassle of losing keys, and allows for password changes at any time. Inside the mail drop box, there are metal baffles to prevent theft or fishing for important mail. Its ideal for use at home, offices, workplaces, or schools.5.Easy Installation: Our through the wall locking key drop box is designed for doors with a thickness of 1.7 inch/43mm and is compatible with various common door types. The wall-mounted mailbox is easy to install without complex steps, and it comes with detailed installation instructions, making it suitable even for beginners.Details: VEVOR Through the Door Key Drop Box-Perfect Protection for Your Valuable Items! You can confidently rely on our through the door key drop box with its unique rainproof flap, acting as a sturdy guardian to keep storms at bay and ensuring your mail remains protected.Spacious SlotMail comes in various sizes, but our wide 1.9x10.2 inch slot of through the door drop box accommodates everything from large parcels to small cards with ease. Whether its envelopes, keys, remote controllers, or rental checks, everything fits effortlessly.Heavy-Duty Steel ConstructionCrafted from heavy-duty steel and coated with powder for added protection against rust, our through the door mail box ensures long-lasting durability and resistance to corrosion. The powder-coated finish enhances its durability, maintaining an attractive appearance over time.Easy InstallationOur key drop box design considers every detail, making installation a breeze. Simply mark and open the installation holes on the wall, mount the delivery slot on the door, insert the mailbox into the door, and install it. Finally, reset the password, and your mailbox is ready to go!Versatile UtilityWhether at home, in the office, or at school, our wall-mounted mailbox serves you well. Its not just a private corner for your home but also a smart choice for offices and a thoughtful protector for schools.