Items - Blower fan A & B, left & Right side (50 percent left and 50 percent right) centrifugal type size 10"-11" air flow 4000 CUM/Hr as per part no. FLC -RLY -045 of M/s Fedder Lloyd or equivalent conf. to RDSO Spec. no. RDSO/ELPS/ SPEC/AC/03 (Rev -2) with amndt 1 & 2 suitable for Fedder Lloyd make conventional type RMPU.