Cast Iron Closet Flange 4 in.

Bring lasting performance and leak-free reliability to your toilet installation with this heavy-duty cast iron closet flange. Engineered to fit standard 4 in. cast iron DWV pipes, it offers a secure seal and simplifies both new constructions and repair jobs. The integrated neoprene compression gasket and robust mounting design ensure a snug fit, while the built-in test cap speeds up the inspection process—just trim it away once you’re satisfied with the seal.

Ideal for plumbing professionals and DIY enthusiasts alike, this flange works seamlessly with cast iron, PVC, ABS, and other multi-purpose piping systems. Its bulk packaging makes it convenient for large projects or stocking up your supply closet.

Key Features

• Durable cast iron construction resists corrosion and wear
• Fits over 4 in. cast iron DWV pipe
• Three pre-drilled screw holes for rock-solid floor mounting
• Internal neoprene compression gasket secured by three hex-head bolts
• Pre-installed test cap—simply cut off after pressure testing
• Compatible with cast iron, PVC, ABS and multi-purpose pipes

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

⚠️ADDITIONAL WARNING: This product can expose you to chemicals including vinyl chloride which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.