Hi Marc99,
Welcome to the Mattress Forum! :)! Thanks for the post.
Unfortunately, I do not see the Queensbridge listed on the Brick website. I see on the S&F CA website that the Founders Collection is made exclusively for The Brick.
Did the sales associate tell you what the materials are? Did they have any spec documents? Or is this just old inventory and you are getting a good deal on? I don’t really think you will receive any detailed specs, as Tempur Sealy is one of the Top 20 Major Companies, and these companies are not transparent with their information. Looks like a good price if you are just comparing the price against other Stearns & Foster models.
The only way to know for certain whether any specific mattress will be a suitable choice that provides you with both the right comfort/pressure relief and support/alignment will be based on your own careful testing or your own personal experience when sleeping. Different people can have very different needs and preferences in a mattress in terms of comfort, firmness, and PPP (Posture and alignment, Pressure relief, and your own Personal preferences).
I’m not sure what you’ve read since you found the site but just in case you haven’t read it yet … the first place to start your research is the mattress shopping tutorial here which includes all the basic information, steps, and guidelines that can help you make the best possible choice.
Let us know if you find any detailed specs and if we can be of further support.
Phoenix