The 3" X 4" ABS Flat Fit Closet Flange with Knockout from Braxton Harris Co Inc is designed for secure toilet installation in plumbing systems. Made from durable ABS plastic, this flange offers excellent resistance to corrosion and impact. The flat fit design ensures a stable base for toilets, while the knockout feature allows for easy customization during installation. This flange is compatible with various toilet models and meets industry standards for quality and performance. Its reliable construction makes it a preferred choice for both residential and commercial applications.