Bus type window Assembly with sliding shutter for Non- AC Coaches glass set as per Drg No. JUDW/ MECH/ 19- 695. Item No. 3 ( sliding glass shutter 5 mm toughened glass LH ), Item No. 4 ( sliding glass shutter 5 mm toughened glass RH ) & Item No. 5 ( Fixed glass shutter 5 mm toughened frosted glass ) is required only, material specification as per Drg. IS: 2553.