These are newly manufactured!
These custom-made acoustic panels are designed to provide professional sound absorption, measuring 48 x 24 x 2 inches. Made from a combination of sound treatment materials, wood, and high density Rockwool, these panels are perfect for soundproofing, absorbing resonance on interior walls, ceilings, and most all recording/podcast studio rooms.

I have various quantities of:
Beige
Grey
Red
Dark Blue
Black
Light blue/grey
dark blue

Depending on how many you buy I can arrange a courier.