High STC and Fire Rated Mullion Trim Caps Clear Filters Mull-It-Over – Flush Sound Barrier Mullion Trim Cap – STC 60 Mull-It-Over – Flush Sound Barrier Mullion Trim Cap – STC 60 Mull-It-Over – Wide Sound Barrier Mullion Trim Cap – STC 60 Mull-It-Over – Wide Sound Barrier Mullion Trim Cap – STC 60 Mull-It-Over – Classic Sound Barrier Mullion Trim Cap – STC 60 Mull-It-Over – Classic Sound Barrier Mullion Trim Cap – STC 60 Mull-It-Over – Wide Sound Barrier Mullion Trim Cap – STC 55 Mull-It-Over – Wide Sound Barrier Mullion Trim Cap – STC 55 Mull-It-Over – Flush Sound Barrier Mullion Trim Cap – STC 55 Mull-It-Over – Flush Sound Barrier Mullion Trim Cap – STC 55 Mull-It-Over – Classic Sound Barrier Mullion Trim Cap – STC 55 Mull-It-Over – Classic Sound Barrier Mullion Trim Cap – STC 55
