Hi Richard, The STC door is not tested for an official STC rating. It’s the only access panel in the industry that makes an attempt at noise reduction…still no testing.
Please let us know if there is anything else we can help with.
Is there a follow up question that we can perhaps attempt to answer? We take deep pride in our technical expertise (something Amazon can not provide) as we know it separates us from our competition, so don't hesitate to ask.
Please reply to this email or contact our sales department here:
Click Here
if we can assist you by answering further questions or with entering this order and please let us know if there is anything else we can help with. If this answer was helpful -
please consider following us on Twitter
or liking our page on Facebook