Engineering grade thermoplastic housing with stencil faced white housing and red letter, is impact resistant, scratch resistant, and corrosion proof. UL94V 0 flame rating. UV stable resin resists discoloration from natural and man made light sources. Rugged Uni body housing snaps together with no additional mechanical fasteners. Faceplate and back cover are interchangeable on housing. Positive snap fit tabs hold faceplate securely, yet easily removable for lamp compartment access. Single face with extra faceplate and color panel. Ideal for applications requiring attractive, quick installation exit signs and low energy consumption.