How many cubic feet per minute (CFM) does the vacuum setting on my Blower Joe SBJ604E move? Your Blower Joe SBJ604E has a vacuum capacity of 450 CFM. Related articles What type of extension cord should I use with my Blower Joe SBJ604E? What are the best uses for my SBJ605E Blower Joe? What are the best uses for my SBJ604E Blower Joe? How many miles per hour (MPH) does the blower setting on my Blower Joe SBJ605E produce? How many cubic feet per minute (CFM) does the vacuum setting on my Blower Joe SBJ605E move?