MPR modular raceway shall be Middle Atlantic Products model # MPR-9. Power modules shall be RLM-xx, or M-xx. Constructed of 18-gauge steel and finished in durable black powder coat, the MPR-9 accepts up to nine MPR modules. MPR components shall be warrantied to be free from defects in material and workmanship under normal use and conditions for a period of three years. MPR components shall be UL Listed separately and as a system in the US and Canada.