Simpson Strong Tie EPB44T 4x4 Post Elevated Post Base Adjustable Height 3-9/16"w x 3-1/4"l x 2-5/16"h 12 Gauge Base Plate Use with 16d Fasteners Zinc Plated 5/8" Threaded Rod Support Zinc galvanized finish containing 0.90oz of zinc per square foot of surface area (total both sides)