SLT1021 Features: * Locking insert for town square curbside mailbox * Material: Rust free powder coated aluminum * Comes complete with two keys * Angled tab inside the slot prohibits anyone from reaching in and removing mail * Provides secure storage of incoming mail * Firmly attaches to the bottom of mailbox with four screws * Maintenance free Includes: * Assembly hardware included Dimensions: * Dimensions: 6"" H x 9.25"" W x 17.25"" D