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 a choice of our most popular blowers, 6′ & 15′ of ducting with a storage bag, and a Manhole Ventilation Passthru (MVP). The Axial AC & DC Metal Blower Systems offer lightweight portability with the highest output available from axial style blowers.