I just replaced my two 620315.321 shrouds with the newer style without any problems. I went to the Camping World site (and called them) with model no. and they knew what to send me. I also found that they had the best price at $79.00 (member price) with free shipping.
I didnt check your shroud part no.s, but think you will be ok if you do as I did.
If you have any question about installing, you can email me at
[email protected]
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