Both the F312 and 2F frames are produced using100% recycled post consumer materials. Theunique Monobond concept involves aone-piece frame sealed to the mediaunder heat and pressure. This constructionfeature produces a continuousbond of media to boardaround the periphery of the frameeliminating weak corners and airbypass. The use of a high tensilestrength polyethylene binderincreases the integrity of theseal allowing the filter to withstandvarying temperaturesand humidity levels.When compared to traditionaldesigns the Monobond type filter?snotched frame corners allow unitsto interlock providing up to 33%savings on warehouse space andfreight costs.For certain heavy duty applicationsFacet also offers a 2" Box frameconstruction available in sixteen(16) standard sizes.MediaBoth the F312 and 2F are manufacturedwith superior grade fiberglassmedia to guarantee full depth loadingand high dust holding capacity.A computer controlled manufacturing process assures a uniform gradient density pattern in the media.To enhance filtration capability and prevent migration of finer particles the filter media is evenly coated with a gelled adhesive. Overall filter integrity is assisted by the addition of a Tri-Directional Scrim backing to the downstream side of the media. This scrim backing is laminated to the fiberglass and provides downstream support while promoting minimum fiber displacement at high velocities and reducing restriction to air flow. The non-metal nature of the backing also eliminates sharp edges making for safe installation and easy disposal.