Tile rails for using many of JBL's ceiling speaker in 1200 mm (48 in) ceiling tile grid systems. Inverted-V design. Can be used with 8124/28, Control 19CS models. Control 24C Micro models, Control 24C models, Control 26 models, Control 40 Series models, and Control 226C/T. (Sold and packed as a kit of 12 tile rails (for 6 spkrs).