Clarke, a division of Alto, offers the Filtra-Pac, a backpack vacuum cleaner that combines the cleaning power of an upright with the ergonomic design of a backpack, according to the company.

A true four-stage filtration system provides HEPA-quality filtration at 0.3 micron with 99 percent efficiency, Clarke says. An on-board storage tool can be changed for carpet, overhead and detail cleaning operations.