Trays are reusable panel filters that provide long life and excellent odor filtration, designed to suit a wide variety of HVAC applications including Hospitals, Pharmaceutical companies, Food processing units, Restaurants, Airports, Commercial Buildings etc. These comes in 20mm, 25mm and 45mm depths. These filters are used as direct replacements to existing air filters and also used in V Bank arrangements on Odor Control Units where handling of higher flow with high residence time is required.