The 4" No Hub Cast Iron Slab Drain Base is engineered for durability and reliability in drainage systems. Designed for a 3-1/2" spud and 7" pan, this drain base is perfect for commercial and industrial applications. Its no-hub design simplifies installation, allowing for quick and secure connections without the need for additional fittings. Constructed from high-quality cast iron, this drain base meets industry standards for strength and longevity, making it an ideal choice for heavy-duty use in various environments.