JBL Professional CSS-TR4/8 Tile Rails for CSS-BB4x6 and CSS-BB8x6 Backcans, 12-Pack

12-piece tile rails designed to support six backcan speakers when installing in tiled or suspended ceiling applications. Each rail accommodates CSS-BB4x6 and CSS-BB8x6 backcan models. Mounting screws (M4 X 8mm) are included for quick installation. Ideal for commercial and residential ceiling speaker installations where structural support and secure mounting are essential. Compatible with standard suspended ceiling grids.