what is 3e class in train

3E is a travel class in Indian Railways that stands for 3rd AC Economy. It is a rare AC 3 tier Economy class available in Duronto trains and Garib Rath Express. The 3E travel class is similar to 3A coaches, with the only difference being in the fare structure. The 3E coaches have 81 berths in each coach, and the fare is lower than that of 3A class.