providing exhaust fans and electrical material at different sites under ae ( e ) kbn , mtnl , new delhi . - 1 sitc of following type 230 v 50 hz ac supply metal exhaust fan with louver shutter in existing opening with necessary arrangement i / c connection etc as reqd ( m / s crompton / usha / havells / kaithan make with isi marked ) ( a ) 300 mm ( 12 ) exhaust fan 2 ( b ) 375 mm ( 15 ) exhaust fan 3 ( c ) 450 mm ( 18 ) exhaust fan 4 supplying & fixing of following electrical items including electrical items including connection, internal wiring etc complete as reqd ( a ) 36 / 40 w fluorecent tube ( make: philips / crompton / surya ) 5 ( b ) 28 w t5 tube ( make: philips / crompton / surya ) 6 ( c ) 40 w copper choke ( make: philips / crompton / surya ) 7 ( d ) 28 w elctronics ballast ( make: philips / crompton / surya ) 8 making suitable opening in brick wall / partitions / glass for mounting 12, 15 & 18 sweep exhaust fan with providing wooden frame / proper adjustment to hold exhaust fan & reparing wall / partition etc as reqd