Trim-Tex Fire Bead is a fire rated wall mount deflection bead that provides 1- and 2-hour fire-ratings for both dynamic and static joints according to UL-2079 5th edition (for both standard walls and shaft walls) and is sound tested according to ASTM E90.
https://www.trim-tex.com/products/overview/code-compliance/ul-fire-rated/fire-bead