Ref my 2017 Vegas 24.1
So far I have found no one at Thor that can give me a definitive answer to this. I say that because I have received 3 different opinions.
1.75# , 2.25 #, and 2.75# (PS the label on the unit is blank)
Wish I had some way to get to factory to find what they are using on the assembly line. So far I'm going with 2.25#
The Evans website ( Evans Tempcon > Troubleshooting, Diagnosis and Repair > Refrigerant Charge Information - R134A Systems
) does not list my unit as per Evans technical help (great service by the way)
If anyone ever get the info direct from the assembly plant let me know