Mica band heaters come in a variety of standard sizes to accommodate different industrial heating applications. Here are common sizes, categorized by their diameter and width:

### Diameter (in inches):

1. 1"

2. 1.25"

3. 1.5"

4. 1.75"

5. 2"

6. 2.5"

7. 3"

8. 3.5"

9. 4"

10. 4.5"

11. 5"

12. 5.5"

13. 6"

14. 6.5"

15. 7"

16. 7.5"

17. 8"

18. 8.5"

19. 9"

20. 9.5"

21. 10"

22. 11"

23. 12"

24. 14"

25. 16"

### Width (in inches):

1. 0.5"

2. 0.75"

3. 1"

4. 1.25"

5. 1.5"

6. 2"

7. 2.5"

8. 3"

9. 3.5"

10. 4"

11. 4.5"

12. 5"

13. 5.5"

14. 6"

15. 7"

16. 8"

### Common Combinations:

1. 2" diameter x 1.5" width

2. 3" diameter x 2" width

3. 4" diameter x 1.5" width

4. 4" diameter x 2.5" width

5. 5" diameter x 3" width

6. 6" diameter x 1.5" width

7. 6" diameter x 2" width

8. 8" diameter x 2.5" width

9. 10" diameter x 3" width

10. 12" diameter x 4" width

These sizes are standard and readily available, but custom sizes can often be manufactured to meet specific requirements. When selecting a mica band heater, it's essential to consider the application, required wattage, operating temperature, and fitment to ensure optimal performance.