The Starflo filter bag system is an advanced alternative to standard bag filters. The key to the Starflo filtration system lies in the patent pending design of the Starflo retainer basket. It’s “star” shaped pleated core provides total 3 dimensional support for a bag filter with 98% more surface area than a standard size 2 filter. The Starflo basket fits into existing standard size 2 housing for easy retrofitting of existing systems.