If you are in the market for a cast iron drain cover, you shouldn't have too hard of a time finding one. Whether you live in a large town with chain stores or are limited to your local hardware store, any hardware store (even Wal-Marts plumbing section) should have a cast iron drain cover. If all else fails, there are many sources for them on the internet. Still, because of the weight of cast
. iron, it is always better to find a drain cover locally. Knowing the diameter of the drain you want to cover is important as well.