What is the minimum thickness of a closet floor flange?

The minimum thickness of a closet floor flange is 3/16 inch. This standard measurement is important because it ensures the strength and stability of the flange when it is installed. A flange with too thin a material may not support the weight of the toilet or could become damaged over time due to the stress of regular use. Maintaining this minimum thickness also helps in providing adequate support for the seal between the toilet and the flange, which is critical in preventing leaks. The choice of 3/16 inch is commonly accepted in plumbing codes and practices, as it strikes a balance between strength and ease of installation.