Gibraltar Mailboxes Parsons Medium Capacity Rust-Proof Plastic White, Post-Mount Mailbox, PL10W0201 Medium capacity fits small boxes, magazines, and padded envelopes Durable polypropylene material is sturdy and rust-proof Ultra-Violet inhibitor protects white finish from weathering Installs easily onto a variety of Gibraltar posts including the BP000W01 and the WP000W01 Made in the USA