Mybecca via Walmart offers its Mybecca 1" Studio Soundproofing Acoustic Panel 12-Pack for $16.99 with free shipping. (Murano Home Furnishing via eBay charges the same.) That's $13 off list the lowest price we could find. Each panel meaures 12" x 12" x 1" and is designed to improve acoustics in recording studios, practice rooms, or home entertainment centers.