Rigidair filters are rigid-box construction air filters engineered to provide medium and high efficiency and prolonged life expectancy. Box filter construction eliminates the need for retainers and special external wire media supports. The Rigidair configuration features strong, corrosion-resistant galvanized steel frame. To prevent air bypass, the filter pak is sealed to the frame on all sides. Filter integrity is maintained by galvanized steel stabilizers on both the air entry and exit sides of the pak. The Flanders PrecisionAire Rigidair filter is available in fiberglass or synthetic and XDH medias.

The Flanders PrecisionAire Precision Pak filter is an extended surface high capacity air filter composed of individual dust holding pockets assembled in a metal support frame. Available in a variety of filter efficiencies, sizes and capacities, the Precision Pak filter allows maximum performance in given applications. Flanders PrecisionAire's unique process of fastening adjacent J-channel frames incurs no media damage during assembly or shipment. The Precision Pak filter is offered in four standard sizes and 24 depth and capacity combinations making it adaptable to a variety of frame and track systems. Precision Pak filters are either Class 1 or Class 2 listed by UL, and are available in either fiberglass or synthetic media.

Flanders PrecisionAire XDH media bag filters out perform similar products with respect to initial efficiency, average efficiency, and dust holding capacity. The XDH media is composed of continuous hydrophobic fibers which do not absorb moisture and are thermally bonded to eliminate the need for chemical containing binders that could promote microbial growth or generate VOCs. These characteristics create a durable media able to withstand turbulent, high velocity conditions. XDH media bag filters exhibit improved overall particle size efficiency and offer lower maintenance and energy cost. XDH media bag filters are tested in accordance with ASHRAE 52.1 and are UL Class 2 listed.