Made entirely of aluminum, Salsbury in-ground mounted deluxe mailbox posts feature a durable powder coated finish available in eight (8) attractive colors. 1-sided (#4870) and 2-sided (#4872 for two (2) mailboxes and #4874 for four (4) mailboxes) deluxe posts can accommodate rural mailboxes and townhouse mailboxes. 1-sided deluxe mailbox posts include a 14'' W x 3-1/2'' D x 3-1/2'' H arm and can be assembled with the mailbox mounted on either the right side or the left side. 2-sided deluxe posts for two (2) mailboxes (#4872) include two (2) 14'' W x 3-1/2'' D x 3-1/2'' H arms. 2-sided deluxe posts for four (4) mailboxes (#4874) include two (2) 24-1/2'' W x 3-1/2'' D x 3-1/2'' H arms. Minor assembly is required.