I've been scrounging the threads regarding Flow hoods, specifically for more information surrounding the importance of the depth of a Hepa filter for a LFH,
Found a filter on ebay for 139+ free shipping, with dimensions 24x24x12,
I came across one thread here that I've now lost, that had a debate around whether or not the 12 inch depth vs the smaller 5 7/8 or 6 inches would impede laminar flow due to less resistance- but It didn't seem like there was any clear answer as to whether A, the 12 inch depth is undesireable, or B, if it didnt matter at all besides it taking up more physical space.
Does anyone have a concrete answer around this?
Seems to me that I could justify a 60$+ discount for that extra 6 inches if that is the major difference between the two.