Spectra AP Pockets stand out as highly efficient air filters specifically engineered for demanding air handling units. These filters exhibit exceptional durability, guaranteeing optimal performance over an extended lifespan. The filter media, designed for depth-loading, undergoes a progressive density multi-layering process, ensuring a remarkable dust holding capacity coupled with minimal pressure drop. This translates to prolonged filter life and reduced energy and maintenance expenses for the user. The inherently rigid pocket filter medium features a welded rib construction, creating a pocket that maintains its functionality with utmost reliability, even in harsh conditions characterized by intense air pressure and high levels of dust.