okba 43" in-ground mailbox mount post,mailbox post fit over 4"x4" wood post,support most standard post-mount mailboxes of curbside residential 43" mounting post is up for auction in Patio, Lawn & Garden. The current bid is $2.00, 97% below the $65.79 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.