Product Update – Mull-it-Over New STC Ratings

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Mull-it-Over Products, a manufacturer of sound dampening Mullion Trim Caps, was very busy this past Summer working in the sound chamber to improve the performance of its current product design. On top of increasing the STC performance of the existing assembly to over 60, they also recently developed a new product line. This new trim cap that has a slightly lower STC rating of 55, but also has a substantially lower cost. Customers now have 2 options to choose from when assessing their structural and budgetary needs.

Mull-it-Over product STC options


“THE MULL-IT-OVER® MULLION TRIM CAP stems from our understanding of building construction. We know that curtain wall manufacturers primarily focus on weather-related factors. And we know that interior manufacturers focus on drywall sound insulation which ends at the slab edge of a building. Yet there’s a gap: Adjacent to a building’s interior and integral to the exterior curtain wall is the grid of hollow aluminum tubes that hold the glass in place. And these tubes—six inches of space around the entire perimeter of glass buildings—serve as open air gaps that conduct noise and cannot stop fires. It affects productivity, privacy and safety (including, of course, HIPAA compliance). White noise devices aren’t sufficient; a more comprehensive solution is needed. And now there is one.”

For additional information on the new product offerings, please download the latest Mull-it-Over brochure or visit the website If you have further questions regarding sound barrier mullion trim caps, or need help with an upcoming project in our territory, please contact our office at your earliest convenience.

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