Stumpy’s video was absolutely my inspiration and gave me both great ideas and the confidence that I could improve beyond what I had. I considered off-the-shelf parts as Stumpy did but decided that it wouldn’t be that much effort to build custom plenums that would give me better air flow with less turbulence. Most importantly, mine had to hang off the back of the ambient filters because I don’t have the floor space Stumpy has. I think my version does what I wanted and needed but Stumpy gets all the credit for the original idea.