The 4" No Hub Cast Iron Roof Drain with Square Pan from Braxton Harris Co Inc is engineered for efficient drainage in flat roof applications. Constructed from high-quality cast iron, this drain offers exceptional durability and resistance to harsh weather conditions. The no hub design simplifies installation, allowing for quick assembly without the need for additional fittings. With a 4-inch diameter, it effectively manages water flow, preventing pooling and potential damage. This roof drain meets industry standards, making it a reliable choice for commercial and residential roofing systems.