Product review (2 stars): Decent, but inferior to OEM product
Our old glass shelf shattered after many years of faithful use. We looked around online but discovered it was discontinued. We ordered one from part select, but it arrived completely shattered. With limited options, this was our second attempt.

As others have noted, it is not the same as OEM. It is a large piece of glass, nothing more, nothing less. Tempered? I have no idea. It is definitely not labeled as such, so I'm guessing no. The size is close to OEM, but there seems to be more wiggle room than the old one.

Is it better than nothing? Sure! Worth $66? Debatable.