VariSorb® XL15 gas-phase filters consist of filter elements assembled in a V-bank configuration in High Impact Polystyrene (HIPS) end caps, and Acrylonitrile Butadiene Styrene (ABS) profiles. VariSorb® XL15 filters replace existing HVAC filters of the same type with no changes required for frames or latches. They are packed and sealed in individual polyethylene bags to preserve capacity and cleanliness. The VariSorb® XL15 filter features a pleated media comprised of very high activity virgin carbon particles bonded into a three-dimensional network of bicomponent fibres that maximizes the exposure of the sorbent to gas. The very small carbon granules, unlike traditional granular bed chemical filters, provide a granular microstructure that ensures a much higher effective area per pound of media, resulting in a high spontaneity of adsorption.