Through The Wall Drop Box, Heavy Duty Steel Mailbox with 2.8-7.9" Adjustable Wall Slides, 13" Combination Lock, 12.5x6.3x16.9" Large Mail Drop Box for Secure Home, Office, School Use, Dark Gray

This through the wall key drop box features a rainproof design with a large protective shield over the delivery slot and rubber pads plus drainage holes at the bottom, preventing water buildup and keeping your mail dry and secure even in heavy rain. With a spacious 12.5 x 6.3 x 16.9 inch storage box offering 0.74 cubic feet of volume and a wide 1.6 x 9.8 inch slot, this drop box easily accommodates smartphones, envelopes, keys, small packages, and other important mail safely and conveniently. Constructed from heavy-duty steel with a rust-resistant powder coating, this mailbox delivers long-lasting durability and scratch resistance, featuring a 2 x 4 inch visual window for quick mail inspection without opening the box, ensuring convenience and security. Equipped with a combination lock, this mail drop box eliminates worries about lost keys and allows easy password changes; internal metal baffles prevent theft or mail fishing, making it ideal for home, office, workplace, or school environments. Designed for easy installation, the mailbox includes adjustable slides to fit walls 2.8 to 7.9 inches thick and comes with detailed instructions, enabling hassle-free mounting on various wall types like brick, concrete, or wood by even beginners.