Mullion Mate® Partition Gap Closures create a seamless transition between curtain walls, windows and partition walls. It is the only partition gap closure that can accommodate lateral movements caused by SEISMIC, THERMAL and WIND SWAY, while providing high acoustical value up-to 62 STC. All of this and our 2-Hr Fire Rating. Install it in 5 minutes or less!

• A = 7 1/4"