custom bid for services - boq item no 1 supply and charging of refrigerant r22 gas to ac plant and package type ac complete all as specified and directed 80 kg , custom bid for services - boq item no 2 supply only of driving v belt c140 degree of suitable size for compressor unit including taking out existing unserviceable one complete all as specified and directed 4 nos , custom bid for services - boq item no 3 supply only of driving v belt of suitable size for booster fan including taking out existing unserviceable one complete all as specified and directed 4 nos , custom bid for services - boq item no 4 supply only of driving v belt of suitable size for blower motor including taking out existing unserviceable one complete all as specified and directed 4 nos , custom bid for services - boq item no 5 supply only of driving v belt of suitable size for fresh air motor including taking out existing unserviceable one complete all as specified and directed 4 nos , custom bid for services - boq item no 6 supply only driving v belt of suitable size for blower motor package including taking out existing unserviceable one complete all as specified and directed 4 nos , custom bid for services - boq item no 7 skilled refrigerator mechanic shift of 8 hours 990 shifts , custom bid for services - boq item no 8 unskilled operator shift of 8 hours 660 shifts