Koch Duo-Cap Cartridge Filters are constructed with a progressively dense synthetic media, and are also available with microfiberglass media upon request.

This graded density construction ensures low resistance to airflow, high dust holding capacity, and prolonged filter lifecycles.

Duo-Cap filters are designed to fit Cambridge Filter Corporation Hi-Cap and Side-Cap frame systems without requiring modification to existing frameworks.

Note: Competitive brand and trade names are used for product identification purposes only. The filter frame pictured is not included.