21T-LF201215CCP - This is Rockwell Automation's catalog number. Per Rockwell, The 21T is an internal indication that it is a Trane OEM drive. The model number of the drive is just the LF201215CCP part. The “CC” indicates the Frame size and the “P” indicates what the coolant is. “R” means water/glycol and “P” means R123 Refrigerant. Do you(Google) want a module or an AC drive since the latter was quoted to Rahi . Note MOD1497 is Trane's own part number. Kindly suggest how do you want to proceed. Thank you!!