The Roof Drain 15 Dia 3NH with Poly Dome and Und Clamp from Sioux Chief Manufacturing is engineered for efficient water drainage in roofing systems. This roof drain features a 15-inch diameter and is constructed from durable materials, ensuring long-lasting performance. The poly dome design prevents debris from clogging the drain, while the under clamp provides secure installation. This product meets industry standards for drainage systems, making it suitable for both commercial and residential applications. Its robust construction and effective design make it an essential component for maintaining roof integrity and preventing water damage.