The WAC T- Bar Drop Ceiling Attachment for Track Lighting in Chrome is used to attach a track to T-bar ceilings. You can use up to two attachments when installing 4 feet tracks, four when installing 8 feet tracks, and six for installing 12 feet tracks. You can use the T- Bar Drop Ceiling Attachment for Track Lighting in Chrome from WAC can be used for attaching tracks securely on drywall, plaster, wood, or suspended ceilings. This ceiling attachment is not for universal use and should be strictly used with other WAC products. It sports a lovely chrome finish that is aesthetically appealing.