supply of 68235739 - twin tower heat less regenerating air dryer & 68235729 - m48 schedule repair kit, m48 schedule repair kit of prag polymer air dryer consisting of 46 items as per the annexure. [ warranty period: 12 months after the date of delivery ] , m48 schedule repair kit of prag polymer air dryer consisting of 46 items as per the annexure. [ warranty period: 12 months after the date of delivery ] , twin tower heatless regenerating air dryer to prag part no.ad -1 and scope of supply as per rdso spec mp.0.01.00.06, rev. 06, march 2021 [ warranty period: 36 months after the date of delivery ]