One-piece 20-gauge CRS baseplate and end caps. Baseplate provided with four-point mounting holes and one wireway hole see Cross Section/Details. White TGIC polyester powder coat 5-stage pre-treatment. Salt spray test: 1,000 hours; Reflectance: 92{04aef197e2a33ee94af7b49af44700ef917df47392523dfa0075c5fa9ebd8a96}. Baseplate/endcaps mount flush to ceiling or wall surface.