Back Width
12 in
14 1/2 in
15 1/2 in
15"
15.5"
16 1/2 in
16 1/4 in
16 3/4 in
16 in
17 1/2 in
17 1/4 in
17 in
17"
17.50"
17.75"
18 in
18"
18.50"
19 in
19"
19.25"
19.50"
20 in
20"
20.50"
20.75"
21 in
21"
21.25"
21.30"
21.50"
21.70"
22 in
22"