DecKorators Post Caps create the finishing touch on pressure-treated or cedar-treated 4 inches x 4 inches or 6 inches x 6 inches wooden posts, depending on their corresponding size. Each post cap has either a pressure-treated or cedar-treated lumber base as well. The tops are available in multiple DecKorators color options, including a wood-finished top to match the base. Wooden post caps should be finished with a high-quality exterior finish to preserve the wood's natural beauty. Caps that have a metal look (not manufactured of metal) require no finish to them, as they are already finished. All DecKorators post caps are installed by applying an exterior-grade construction adhesive to the underside of the post cap.