RV brands use different awning manufacturers, depending on what’s available during the production run down the assembly line… so it’s hard to say with any certainty what type you have.
I can’t speak for Dometic… but if it’s one from Carefree of Colorado, you should be able to find a tag like those shown in the photos up on the roller.
That tag will have the part number & serial number of your awning… and this is what you’d use to order replacement parts and/or a new canopy.