أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
the best selection method of diffuser size is the manufacturer catalogue, based on the noise level set by the designer you can get the FPM of a specific size of grill or diffuser, once you have the FPM and grill area its easy to get the CFM (FPM*Ft square)
