4x4 Economy Post Caps (3.5" x 3.5") Dark Brown (Case of 12) - 10 Year Warranty Made from high impact, remarkably sturdy ASA resin. The same material used in automobiles. 10 year warranty against fading, discoloration and warping. Fits a standard (Nominal) post. (3.5 x 3.5 up to 3.85' x 3.85'). Quick and easy patented SNAP-CAP installation, built right into the cap! Outlast any wood product on the market