Gibraltar Mailboxes MSK Mailbox, Polymer, White, W, D, H✅ Includes magnetic bit holder✅ Includes drill bit sharpener��️ Secure Your Next Project Heavy-duty construction. Mounts on house or post. Heavy-duty cam lock with 2 keys. Rustproof. Extra generous capacity. Size of 17.1 in W x 13.3 in H x 8.4 in D.