The 4" PVC Plastic Roof Drain with Cast Iron Dome is designed for optimal drainage on flat roofs. Constructed from high-quality PVC, this drain is lightweight yet durable, while the cast iron dome provides added strength and resistance to wear. It effectively channels water away from the roof surface, preventing leaks and structural damage. This product meets all relevant industry standards, ensuring reliability and safety. Ideal for both residential and commercial applications, it is easy to install and maintain.