4" x 4", Victoria Copper Plateau Post Cap, Pressure Treated Base, Inside Dimensions Measure 3-5/8" x 3-5/8", For Posts Measuring 3-1/2" x 3-1/2".
WARNING: Drilling, sawing, sanding, or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood.