I bought this to use with my 5 pound basic mold and it fits perfectly! I did a 5 minute mod to keep it secure and it is excellent!
They are perfectly clear after removing the protective covering paper, and a quick swipe of steel wool over the edges easily removed any tiny rough spots.
Not as perfect as the premium with the slider cover, but it has been out of stock every time I check so this is the next best thing ;)
See pics of my simple mod.