Cooper Crouse hind.ellm92018/18  ex2 ATEX 2ft twin. 2 x 18w fluorescent  pole mount from end of fitting. could also be roof mounted. see photos for spec top of the range fittings. Cost over 300 pounds each. Surplus from job. Some are missing outer boxes. Check my other items as we have emergency fittings and led spotlights also. See photo for part numbers spec etc