Versatile Outdoor Placement: Securely mount outdoor post-top lanterns and light fixtures on walkways, porches, patios, columns, or deck surfaces. Compatible with wood, masonry, or metal installation surfaces for flexible outdoor lighting placement. Designed for Post Light Fixtures: Built specifically for post-top light fixtures with a 3-inch diameter fitter. This pier mount base is intended for lighting applications only and is not designed for structural posts, mailbox posts, or larger lamp posts. Durable, Weather-Resistant Construction: Made from high-quality cast aluminum with a protective black finish that resists rust, corrosion, and outdoor weather conditions for long-lasting performance. Standard 3-Inch Fitter Compatibility: Measures 2.25 in. H x 3.5 in. L x 3.5 in. W and features a 3-inch diameter fitter designed to fit most standard outdoor post-top lanterns and light fixtures. Quick Installation: Installs easily on columns, piers, or flat deck surfaces. Requires 6mm mounting hardware (not included) for secure installation. Trusted Quality: Backed by more than 150 years of Design House craftsmanship and supported by a 10-year limited warranty for peace of mind.