Allux 800 Large Mail/Parcel Box. Do you need more room? Our parcel mailboxes can easily hold up to two weeks of mail. Made of strong, galvanized steel it has a letter/parcel flap with soft closing mechanism: elegant and silent. Front mailbox retrieval door is fitted with a Ruko Lock. Parcel opening: 4-1/2″ x 11-7/8″ x 13″