Air Flow - Which is the operational difference between LAF (vertical and horizontal) and RLAF?

[Olgamargarita]

Dear all,
please help, which is the operational difference? I have seen a lot of diagrams and the flow air between them are the same: extract air from the environment then filter and then is inject in work zone, then extract and a percent of air recirculate and the other is eliminate by filter to the environment.

very thankfuly for your comments.

Olga

 

[Olgamargarita]

Please some one can help me?

 

[Marc]

A quick "Bump". My Thanks in advance to anyone who can help.