The Through-Wall Mailbox is built for durability and weather resistance, with a stainless steel cover, galvanized steel chute, and cold-rolled steel box to withstand the elements. The rainproof cover keeps your mail, checks, keys, and other items safe, dry, and clean, even in harsh conditions. Designed for easy through-wall installation, it is compatible with walls 5.5'' to 10'' thick and comes with all necessary hardware for quick setup. For added security, this mailbox features a secure key lock and an anti-fishing mechanism with a jagged panel to protect your items from unauthorized access. With its spacious storage (12.25'' x 6.5'' x 15'' exterior), this drop box is perfect for envelopes, cash, checks, and small items, with a 9.4'' x 2.25'' mail slot for easy deposits. The rust-resistant galvanized steel chute ensures long-lasting performance, making it ideal for businesses, offices, and rental properties.