There are many types of primary filters, the filtration efficiency ranges from G1 to G4, and the materials are also different.
Coarse non-woven filter material, activated carbon filter material, metal mesh filter material, nylon mesh filter material, disposable paper frame filter.
Product Description
1. Cardboard panel filter
2. Economical
3. Easy to be disposed of
It mainly filters the particles with diameter of over 5 microns, the frame is made of hard anti-flame paper boards or aluminum and it was combined with synthetic glass fiber or glass fiber, the filter can be flat or folded, the cost is much lower, and it is changed easily.
The filtration grade is G2, G3, and G4, it's used widely for primary filtration.
Advantages:
• Excellent prefilter for higher efficiency filters
• Excellent primary filter to prevent dust build-up on heating
• an cooling coils, fans, and ductwork
• High-loft synthetic media
• Four Efficiencies range from MERV 6, MERV 7, MERV 9
• 1" , 2" and 4" models
• Premium performance and construction
• For simple storage, installation, handling and removal
• Each filter includes a label noting tested efficiency,pressure
drop,rated airflow
Parameters & Material:
- Frame: Die cut cardboard / Aluminum / Galvanized steel
- Media: high lofted synthetic fiber
- Gasket: Neoprene ( available on request)
- Max.Constant Temperature: 80ºC (170ºF)
- Recommended Final Resistance: 200Pa ( 0.8" W.G)
- Flammability: UL Classified
- Relative Humidity: 100%



