Our easy to order, easy to use Complete Ventilation Systems include all the most requested equipment you need for your confined space site. The systems include our most popular Ex-Proof axial metal blowers with duct canister (15′), 6′ ducting, and a Manhole Ventilation Passthru (MVP). The Axial AC Metal Blower Systems offer lightweight portability with the highest output available from axial style blowers. Made in the USA. See individual blower descriptions for CFM, weight, and other specifications.