The 3" x 4" PVC Flat Fit Closet Flange with Knockout and Stainless Steel Ring from Braxton Harris is an essential component for toilet installations. Constructed from durable PVC, this flange is designed to withstand the rigors of plumbing applications. The knockout feature allows for easy customization, while the stainless steel ring enhances strength and longevity. This flange is compatible with both 3" and 4" pipes, making it a versatile choice for various plumbing setups. It meets industry standards for quality and reliability.