We don’t recommend the use of a lid on a skillet unless the lid is designed with a sloped rim or has been specifically supplied with the product.
However, we do have many lids available that may meet your needs.
To determine which size lid you need, just measure the interior rim to rim, don’t include the walls.
It’s important to ensure the lid is right for your product, as ill-fitting lid can lead to a vacuum seal being created, making it difficult to remove the lid, and/or deterioration of the nonstick around the rim of the skillet.