Pabco Systems - 1/2" QUIETROCK 510 Gypsum Panel, 4' x 8' {Subject to minor lead time, dependent on location - inquire for details} QuietRock 510 is a cost effective sound reduction gypsum panel designed for residential and/or remodel applications. The 1/2" panel outperforms alternative methods of soundproofing, including double-paneling. It can be installed over existing drywall, so demolition is not necessary. Benefits are: Solid performance at a great value Delivers STC ratings of 47-53 depending on wall assembly UL fire-rated (For use in fire-rated assemblies) Ideal for remodels and upgrades; installs over existing drywall, with no demolition* Continues to reduce noise even when fixtures are installed, such as shelves or lamps Only 1/2” thick Lab tested * Not recommended for ceiling construction. Data Sheet