Blast Cabinet Question: How Tall?

[doug@dougbraun.com]

Hello,

I am mostly finished with my project of building a blasting cabinet from TP 
Tools' parts kit
and plans, and I am to the point where I have to cut the legs.  

Does anybody have any advice on how high the glove holes should be?  It seems
like they ought to be a little bit higher than elbow-height, but since I have 
no experience
actually using a cabinet, I cannot say for sure...

Thanks,

Doug Braun