Fiberglass Air Filter 20 Inch by 25 Inch by 1 inch. AAF filters are constructed with premium grade fiberglass media. More fibers ensure AAF filters have higher arrestance and clean air better than competitive filters. The media is coated with a light adhesive to increase the amount of dirt the filters can hold. Higher dust holding capacity means longer service life and lower operating costs. The double-skinned media design eliminates the need for scrim or metal retainers by building the strength requirements into the fiberglass. Through the use of computer automation, the fibers can now be spun in a pattern that actually duplicates the holding strength of scrim type retainers. The double-skinned fiberglass retainer also provides a better adhesive bond to the frame because it is spun into the media. This new technology has produced a superior product without additional cost. Compression resistant glass fibers decrease media pad deterioration allowing a normal rise in resistance as the filter collects dirt particles. A slower rise in resistance extends the life of the filter. A continuous adhesive bond between the media pad and chipboard frame maximizes construction strength to reduce handling damage and permit longer storage life. The chipboard filter frame, free of sharp edges, makes the panel easy to install and remove. After removal, the filter can be safely folded for compact disposal.
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