Roof Mounted Heat Exchanger As Per Drg No Rwf/El/Sk/Wsc A3-2012-028 Air Volume(Internal Ckt& Outer Ckt): 965 Cubic Metre/H; Cooling Surface: 4.4 Sq Meter; Two Fan/Unit Temperature Range: 20 Degree To 55 Degree Centigrade. Enclosure: Ip 54 Model No : Sk324800 Of Rittal Make Or Equivalent For Thyristor Panel Of 35T Crane. Note: 1 Mak E Shall Be Indicated 2. Warranty Shall Be 18 Months From The Date Of Supply Or 12 Mont Hs From The Date Of Installation. 3 Only Authorised Dealers/Manufacuters Need To Quo Te [ Warranty Period: 18 Months After The Date Of Delivery ] ]