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.
What finishes are available for Mull-It-Over mullion trim caps?
Mull-It-Over trim caps are available in clear anodized and raw aluminum as standard finishes. Custom finishes, including Kynar-painted and anodized options, are also possible. If raw aluminum is chosen, the contractor is responsible for applying the finish in the field.
How is the Mull-It-Over mullion trim cap installed?
Installation is done through slotted holes at 6” on center (O.C.), allowing slight movement towards the glass. Fasteners are required at 12” O.C. spacing. Fire-rated locations require #8 fasteners, while non-fire-rated applications can use standard drywall screws. A cap piece is pounded into place with a rubber mallet, and any non-hardening caulk can be used for sealing around the trim cap and mullion.
Where is Mull-it-Over typically installed?
Use Mull-it-Over trim caps wherever speech privacy or sound isolation is desired between walls that meet with a glass façade or curtain wall. Typical projects include medical offices, law offices, executive offices, conference rooms, classrooms, condos, and apartments.
What are the available dimensions for Mull-It-Over trim caps?
Maximum depth: 8″ (Flush Profile) 8.5″ (Fire-rated) 9″ (Classic Profile, non-fire-rated) Standard lengths: 12’ or less.
Does Mull-It-Over have fire ratings?
Yes, fire-rated options are available for 1-hour or 2-hour ratings.