Orthodox shirt size comparison table:

Size (collar circumference) Lapel size stand collar

Centimeter inch

38 15 165/84A 40

39 15.5 170/88A 40

40 16 175/92A 4 1

4 1 16.5 180/96A 4 1

42 17 185/ 100 a 42

43 17.5 190/ 104B 42