4×4 post base:  Designed for nominal 4×4 lumber (actual size 3.5″x3.5″). The inner diameter of 3.6″ ensures easy insertion. It fasteners securely onto wood or concrete, providing sturdy support for pergola, deck, patio, fence, mailbox Raised isolation:  Design with 2.5mm thick columns lifts posts off the ground, preventing moisture intrusion. Protects against rot caused by water exposure, extending post life and enhancing overall safety Robust durability:  Crafted from solid steel 2mm thick, with precision full-weld construction. Quality black powder-coating resists corrosion and rust. The smooth finish adds elegance and ensures longevity Versatile:  4×4 post base add stability to deck railing, pergola, fence, and mailbox. 4×4 concrete post base sides adapt to situations where a full four HomePaymentShippingReturn PolicyAbout UsContact UsFeedbackTitleRoof Racks & Side RacksRV, Trailer & Camper PartsLandscape Trailer PartsHOME and GardenAutomotive Tools & SuppliesJeep partsFordChevyToyotaTacomaDodgeTeslaPolarisHondaCan AmJohn DeereKawasakiYamahaCorvette4PCS 4 x 4 Post Base Post Anchor Bracket Fence Post Anchor for Deck Supports NEWColorBlackSize4x4 Post baseWeight2.5 lbs / 1.1 kgTypeCorner BracketBrandTIEWARDSMPNTI-C1598V02Unit Quantity6 PCSProduct Size6.5 x 3.8 x 5.5″/ 16.4 x 9.6 x 14 cmItem Diameter (Interior)3.6 inItem Length6.5″/ 16.4 cmCountry/Region of ManufactureUnknownMaterialPowder Coated Steel