JBL CONTROL 14C/T is a 4 In. Two-Way Coaxial Ceiling Speaker in White. This full-range ceiling speaker consists of a 100 mm (4 inch) high tech cone driver and a 19 mm soft-dome liquid cooled tweeter. It can be mounted in a vented paintable baffle that is made of UV resistant UL94-V0 and UL94-5HB material. Included with a pre-attached blind-mount back installation of the speaker is quick and easy.