Decorex Hardware Pineapple Post Cap – True Full-Dimension 6"x6" Posts True 6x6 posts carry weight — gate columns, pergola beams, driveway entrance pillars, deck support posts. They are expensive to install and even more expensive to replace. The fastest way to shorten their lifespan is to leave the top exposed. End grain absorbs moisture directly into the post core, and rot works downward invisibly until structural damage is done. Decorex Hardware caps stop that process with a flush, watertight seal built from thick-walled cast aluminum. Installation: 2 stainless steel screws with black-coated heads included. Can also be installed with exterior-grade construction adhesive or silicone for a completely fastener-free finish. Installs in under two minutes per post with no special tools. Suitable for residential, commercial, and contractor applications. Compatible applications: true 6x6 gate columns, pergola posts, deck support posts, driveway entrance pillars, fence posts, lamp posts, newel posts. Important: This cap fits ONLY posts with actual dimensions of 6"x6". It will NOT fit standard 6x6 dimensional lumber posts which measure 5.5"x5.5". Always measure your post before ordering — do not rely on the lumber label. Decorex Hardware — Canadian-designed outdoor hardware built for real weather, real use, and lasting curb appeal.