SONOpan Soundproofing Panels 4 ft. x 8 ft. x 3/4 in
They are worth $60.00, I have two panels available for free.
I bought 8 pieces, 2 panels left over. It is free to pickup from my home in Mississauga.
2 panels were never used they look brand new, they are sitting on the same location ever since it was delivered by delivery guys in my garage.

Both pieces are located in Mississauga, near area Hurontario and Matheson.
Call Rizwan at: 437-829-7500

https://www.homedepot.ca/product/sonopan-soundproofing-panels-4-ft-x-8-ft-x-3-4-in/1000441119