Sleeper coaches have the same layout as 3A, six berths per bay plus two side berths, without air-conditioning or bedding. The windows open and have bars. A standard ICF Sleeper coach has 72 berths; LHB coaches have 80. It is the cheapest reserved class with a berth and the class the fare table is built around: every AC fare is a published multiple of the Sleeper fare for the same distance.
Tatkal for Sleeper opens at 11:00 IST, an hour after the AC classes. The cancellation flat charge is ₹120 per passenger with no GST.
Also written or searched as: sleeper · sleeper class · S coach · non-AC sleeper