Price R-STC Silencers provide noise reduction performance meeting STC 40, 45, 50, and 55 ratings as required. An STC rating is a single number value indicating the sound isolation properties of a building element (wall, slab, etc.). STC Ratings are often specified for wall construction between adjacent acoustically sensitive rooms, such as interrogation rooms or conference rooms. The STC rating of the R-STC silencers has been determined based on insertion loss performance obtained in strict accordance with ASTM E477 and rated according to ASTM 413.

• Designed to provide STC40, 45, 50, and 55 ratings.
• Double wall construction for high transmission loss.
• Welded construction with mechanical fasteners as needed.
• 2 in. slip connection on both ends.