STC 55 Options

STC 60 options

Classic Sound Barrier Mullion Trim Cap

With a low profile 7/8” return leg, this mullion cap delivers high performance in a compact size. This mullion cap is compatible with most curtain wall systems with standard demising wall construction making it the standard wall termination detail for buildings with store front, curtain wall or ribbon window facades.

Flush Sound Barrier Mullion Trim Cap

For locations where the dimension between the face of the demising wall and face of the mullion is less than 7/8”. This mullion cap provides a clean transition solution while maintaining a high STC.

Wide Sound Barrier Mullion Trim Cap

This mullion cap has an extra wide return leg extension for locations with wide dimension walls or offset wall construction. Custom profiles available.

Wide Sound Barrier (No Mullion)

Classic Sound Barrier Mullion Trim Cap with 1-Hour or 2-Hour Fire Rating

A layer of intumescent foam is added to the Classic sound barrier mullion trim cap to provide a 1-Hour Fire Rating. Certified to UL/ULC 2079/S115 testing. UL Assembly No. WW-S-1039

A layer of intumescent foam with thermal blanket are added to the Classic sound barrier mullion trim cap to provide a 2-Hour Fire Rating. Certified to UL/ULC 2079/S115 testing. UL Assembly No. WW-S-1041