STC rating of a drywall partition curtainwall mullion assembly increased from an STC 28 to an STC 54 with MULL-IT-OVER mullion caps installed. ASTM E 90 Sound Transmission Loss Testing performed at Architectural Testing Inc., York, PA.
MULL-IT-OVER mullion caps are available in anodized or custom paint finishes to match any curtainwall mullion finish.
MULL-IT-OVER mullion caps can be used in new construction or added to an existing wall.
Easy to install
Meets demising wall STC rating requirements of IBC and 2010 Healthcare Guidelines.