Mailbox Opening, Closing: Listen & Download Mailbox Opening, Closing .mp3 Error! Change your browser, please! ⇓ Download Anvil, hammer blows ⚠ Creaking metal from friction ⚠ Falling metal objects ⚠ Pounding on metal objects ⚠ Metal strike ⚠ Squeal of movement of metal on metal ⚠ Closing, Mailbox Opening ⚠ Roller coaster, trolley noise, traffic ⚠ Falling object on a metal surface ⚠ Metal trolley ⚠ Trash can lid ⚠ Creaking carousel ⚠ ★★★★★