The 20x20 stainless steel manhole cover and frame is a square septic tank lid with a base, designed for industrial and commercial use. This durable and reliable product is made of high-quality stainless steel, ensuring longevity and resistance to corrosion. The square shape and large 20x20 size make it easy to install and provide a secure fit over septic tanks or manholes. Perfect for businesses and industrial facilities looking for a sturdy and efficient solution for their waste management needs.