Pre filters or Coarse filters or Primary filters which are used for filtering larger dust particles 10 micron and above. Trijama Pre filters have high dust holding capacity which contribute in increasing the life of Fine filters. Pre filters are classified as G1 to G4 grade as per Eurovent classification ( MERV-5 to MERV-8 as per ASHRAE Classification). Pre filters are available in air cleanable and water washable type.

Air cleanable pre filters are made from High loft - High Dust holding non woven and gradual fiber mounted synthetic media. These filters reduce frequent cleaning or washing thereby reducing maintenance cost due to its longer service life.

Washable type pre filters are made from High strength synthetic needle felt media supported with HDPE mesh and Aluminium mesh to withstand frequent washing. These filters are manufactured in pleated construction to have comparatively more surface area than Air cleanable filters.

Pre filters are available in flat media construction to handle low volume of Air. Disposable pre filters are also available in Cardboard frame.

Available in Box type and Flange type.

Frame material : GI , M.S. powder coated, Stainless Steel and Aluminium.

Fine filters: Fine filters or secondary filters which are used for filtering finer dust particles 5 micron to 1 micron. Fine filters have medium dust holding capacity which contribute in increasing the life of super fine absolute filters. Fine filters are classified as F5 to F9 grade as per Eurovent classification (MERV-9 to MERV - 15 as per ASHRAE Classification )

Air cleanable Fine filters are made from High loft - High Dust holding non woven and gradual fiber mounted synthetic media. These filters reduce frequent cleaning or washing thereby reducing maintenance cost due to its longer service life.

Washable type Fine filters are made from High strength synthetic needle felt media supported with HDPE mesh and Aluminium mesh to withstand frequent washing. These filters are manufactured in pleated construction to have comparatively more surface area than Air cleanable filters.

Available in Box type and Flange type.

Frame material : GI , M.S. powder coated, Stainless Steel and Aluminium.

Pocket filters with High loft synthetic media: Trijama synthetic pocket filters are manufactured from High performance - gradual fiber mounted - thermally bonded -non shredding non woven - silicon free fibers. These pocket filters are designed to handle more volume of air in a constrained small filtering area. Trijama synthetic pocket filters offer comparatively low pressure against turbulent high air velocity. These pocket filters enhances the life of filter with high dust holding capacity.

Available in G2,G3,G4,F5,F6 and F7 Grades.

Pocket filters with Diamond spacers: Trijama also offers synthetic non woven self supported rigid Pocket filters with aerodynamic diamond shaped tubular Spacers ,for 100% utilization of filtering area resulting in lower Pressure drop and higher dust holding capacity and extended service life. Lower pressure Drop helps in reducing energy cost.

Available in G2,G3,G4,F5,F6 and F7 Grades.

Pocket filters with synthetic melt blown media: Trijama offers secondary Pocket filters manufactured in synthetic melt blown media which have high efficiency with comparatively lesser dust holding capacity than High loft synthetic media. These pocket filters are widely used in clean room Air Handling Units where the clean air is re-circulated. Individual pocket is thermally or ultrasonically welded at the edges to avoid leakages from the joints.

Available in F5,F6 ,F7 and F9 Grades.

Pocket filters with glass fiber media: Trijama also offers high temperature pocket filters in glass Fiber non woven filter media to withstand temperature u pto 150 Deg C where normal synthetic filters cannot be used.

These glass fiber pocket filters are available in F5, F6, F7 and F9 Grades.