What blower do I have?????

I bought an old SSI 14/71 HH awhile back and was wondering How do I tell which model it is? Is there numbers or markings to look for?

 

on top of the case near the inlet in the back there should be a number. there should also be one on the rear bearing plates. get the number and call SSI talk to TJ or Rich and they will tell you what you have. 1-216-676-5800
Darren

 

Perfect Thanks