Most Carter AFB rebuild kits do not include air cleaner gasket, but the are available for purchase separately. These are the two most common; compare the photos and dimensions to be sure which one your carb matches.
ID: 5030”
OD: 5500”
Thk: .045”
ID @ straight edge: 3.80”
ID @ curved edge: 4.20”
OD: 4.80”