Corrugated Plastic Sheets - 24 x 36 inches - Acoustic Foam Backing

Size
24" x 36"
4 mm thick 

A great solution for acoustic foam backing! 

Mounting Acoustic Foam With Minimal Damage:

Mount the acoustic foam to a piece of corrugated plastic with adhesive. Then, rest or hang the assembled panel on the wall. This not only saves your walls but it also gives you the freedom to move the panels around for sound testing or take them with you if you move.