WILDECK® WC18 18″H SINGLE COLUMN POST FOR SINGLE RAIL 5″ X 5″ COLUMN POST IS MANUFACTURED USING 3/16″ THICK STRUCTURAL TUBING. 12″ X 12″ BASE PLATE IS 3/4″ THICK. PAINTED WILDECK SAFETY YELLOW. INCLUDES A ONE-YEAR MODEL # B2056595 – COLUMN HARDWARE PACK: INCLUDES FOUR 1/2″ X 5″ WEDGEBOLTS, PLASTIC PLUGS FOR UNUSED HOLES AND A ZINC PLATED COLUMN CAP (SOLD SEPARATELY).