The Aerostar� Series 400 pleated air filter is a perfect fit to remove airborne irritants in the HVAC units in commercial, light commercial and industrial buildings alike. Ideal applications include office and retail, industrial filtration, single and multi-family housing, government and education facilities, and healthcare applications from doctor offices and assisted living facilities to Hospitals. The Series 400 offers - 
State-of-the-art 100% synthetic media for high efficiency with low air flow resistance
Low pressure drop minimizes energy costs
Laminated expanded metal grid provides exceptional strength throughout filter life
Grid prevents fluttering of media while maintaining pleat uniformity
Moisture resistant die-cut frame retains strength while wet, will not promote microbial growth
Achieves MERV 8 for Standard Capacity