This may be a good alternitive to using feins.

[knight_toolworks]

After meltinfg two of them (I think it was because I sealed the va part too well but who knows? using a central vacuum may be a betyter alternitive. they use the same motors but are easier to repair it looks like. Plus it has a little better porformance and it is quieter.
http://www.centralvacuumstores.com/Central-Vacuum/Imperium/Power-Units-Paper-Bag/CV300-Power-Unit.php

[Brady Watson]

Two of them would probably be OK. 133 is a bit low in the CFM department.

-B

[knight_toolworks]

Two of them would probably be OK. 133 is a bit low in the CFM department.

-B
but higher then a fein at 129 and it has 10" that is if they are not fudging the numbers.

[knight_toolworks]

oops this is a flow through design. can't have that.
this might work well though
http://www.centralvacuumstores.com/Central-Vacuum/Imperium/Power-Units-Paper-Bag/CV9000-CV500-Power-Unit.php