VEVOR Post Base, 4x4 Mailbox Base Plate, Bronze Powder-Coated Fence Post Anchor, Q235 Steel Deck Post Base, Surface Mount Base Plate for Mailbox Pos
5"/16.VEVOR Post Base, 4"x4" Mailbox Base Plate, Bronze Powder-Coated Fence Post Anchor, Q235 Steel Deck Post Base, Surface Mount Base Plate for Mailbox Post Deck Supports Porch Railing Post HoldersPremium SteelSolid Mailbox Post BaseEffortless InstallationDrain Hole DesignEnlarged Bottom PlateVarious ApplicationsPlate Size: 8.6 lbs /3 kg,Tube Size: 4" x 4"/10.8 cm,Product Height: 6.