Engineered for maximum visibility and durability, the oversized 21-inch dome topper from Pro-Line is a reliable addition to any marker post setup. Crafted from RhinoPoly®, a proprietary thermoplastic blend, this topper stands resilient against UV damage, fading, and cracking, ensuring it remains functional and visible for over a decade. The innovative 360-degree round profile, coupled with permanent hot-stamped graphics, enhances identification and safety in various construction and utility environments, making it suitable for extreme temperatures ranging from -40°F to +150°F. Its pointed end allows for easy installation, and retrofitting options are available to update existing markers, further extending its utility. With a 10-year warranty, this marker post topper is designed to meet high visibility standards while remaining robust in the field.