Description · 4’ tubes for G13 base socket · Body material: Glass (15W); PC+1/2 AL (18W) · Choice of three CCTs (3500K, 4000K, 5000K) · Not for use with magnetic ballasts · Not dimmable · For operation with most electronic ballast without rewiring (See below for tested list of compatible E-ballasts) · 250° beam angle (15W); 130° beam angle (18W) · RoHS-conformity, No mercury · 50,000 hours rated life1 · CUL: 15W&18W · DLC: 15W