Mull-it-Over
The Mull-It-Over Mullion Trim Cap is a simple, clean, metal trim that covers the connection between a partition wall and window mullion. Without Mull-It-Over, this connection is an acoustically weak path that allows for sound transfer between adjacent rooms. The Mull-It-Over Mullion Trim Cap is designed to maintain the acoustical performance of the wall without acoustical degradation from the mullion. The trim cap is easy to install during new construction or added during retrofit. Tested for STC 55/60 with 1-hour and 2-hour fire ratings. Available in a variety of standard and custom profiles and finishes to match the curtain wall.