Supply Giant cleanout cover plate is constructed out of high-quality stainless steel. It is suitable for concealing an Cleanout hole where a cleanout plug is located while still allowing easy access to the cleanout plug when necessary. It can also be used as a wall protector to protect against doorknobs from damaging your walls. Choice of 2 size bolts to fit a variety of needs. Its flat design is easy to install and features a clean, simple look. Rust and corrosion resistant. ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.