The FOSC450-A4-4-12-1-A1V from CommScope is a robust and versatile single-ended fiber closure designed specifically for below-ground and buried installations. Constructed from impact-resistant polymer, this enclosure not only meets IEC 61300 standards but also ensures water resistance with a flash test valve rated at 5 psi, making it ideal for diverse environmental conditions. It features multiple splicing capacities, accommodating up to 144 fibers via mass fusion splicing or up to 96 fibers with single fusion, providing extensive options for varying networking demands. Its design includes provisions for effective cable sealing with a compressed gel type and a durable dome-to-base clamp with an O-ring for additional protection. With a compact diameter of 150 mm and a maximum cable entry of 25 mm, it can be efficiently mounted on poles, strands, or walls while maintaining a streamlined look in a sleek black finish. This enclosure not only streamlines fiber management but also complies with regulatory requirements, ensuring it meets the latest standards in fiber optic technology.