Fire helmet fronts and inserts

[E82T31B27]

What company makes F.D.N.Y. Fire helmet front inserts and just the fronts themselves? Because, I'd really like to have one that has the number 17 in one like the ones in this photo.
http://ladder18fdny.com/images/scans_from_firehouse_pictures/backstep01.jpg

 

[336]

http://nycfire.net/forums/index.php/topic,13913.msg51566.html#msg51566

 

[E82T31B27]

Thank you!