Koch Maxi-Grid Panel Filters | MG200 MG300 MG400 MG550

Koch Maxi-Grid is the synthetic-media panel filter line for AHU prefiltration and equipment protection where pleated construction isn't needed. MG200, MG300, MG400, MG550, and MG600 tier the synthetic media weight from light-duty equipment protection (MG200) up to heavy-duty industrial prefiltration (MG600). Self-supporting media — no expanded metal grid needed — reduces installation weight and simplifies disposal. Used as throwaway prefilters protecting Multi-Cell or DURAMAX final-stage filters in commercial AHUs, and as standalone filtration in light-duty and process-air applications. Available in cut blanket and bulk roll formats for AHU retrofits.