They are A/C make and model specific and might be hard to find one for your rv's year. You will have to get the make and model number for the A/C then do a google search for a parts list. If you don't have the info available there will be a sticker under the shroud.
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired