Blowers Depot offers regenerative blowers from Goorui-USA. An OEM distributor of Regenerative Blowers, Side Channel Blowers & Vacuum Pumps. https://www.dropbox.com/scl/fi/k707ldo17c82niyuxvksr/Understanding-Regenerative-Blowers_-High-Performance-Air-Movement-Solutions-_-blowersdepot.com.paper?rlkey=rtz6owufd5f2zfyujlpqh1om9&st=f4g0l10e&dl=0