What is the primary filters

The primary filter is suitable for the primary filtration of the air conditioning system, mainly used to filter dust particles above 5um. The primary filter has three styles: panel, folding, and bag types. The outer frame materials include paper frame, aluminum frame, galvanized iron frame, and the filter material includes non-woven fabric, nylon mesh, activated carbon filter material, metal mesh, etc. For protective net have double-sided plastic-sprayed wire mesh and double-sided galvanized wire mesh.

The characteristics of the primary filter: low price, lightweight, good versatility, compact structure. Mainly used in pre-filtration of central air conditioning, centralized ventilation systems, pre-filtration of large air compressors, clean return air systems, pre-filtration of local high-efficiency filter devices, high-temperature air filters. This kind of efficient filter is commonly used as the primary filtration of air-conditioning and ventilation systems, and it is also suitable for simple air-conditioning and ventilation systems that only need one-stage filtration.

G series coarse-efficiency air filters are divided into eight varieties, namely: G1, G2, G3, G4, GN (nylon mesh filter), GH (metal mesh filter), GC (activated carbon filter), GT (high-temperature resistance coarse filter).

The filter material is packed into high-strength cardboard in a folded form, and the windward area is enlarged. The dust particles in the inflowing air are effectively blocked between the pleats and pleats by the filter material. The clean air flows out evenly from the other side, so the airflow through the filter is gentle and even. Depending on the filter material, the particle size that it blocks varies from 0.5um to 5um, and the filtration efficiency is also different!