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GeneralAire F1018 MERV 11 16x25x4 Media Filter


GeneralAire F1018 MERV 11 16x25x4 Media Filter
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The GeneralAire F1018 MERV 11 16x25x4 Media Filter is the correct filter replacement for the following General Air Purification System Model:

  • General Air TERSus 1200 Air Purification System

The GeneralAir 4571 is a MERV11 16x25x4 Media Filter which removes airborne particles and allergens as small as 0.3 micron to improve indoor air quality in your home dramatically year round. The General Air Merv 11 electrostatic, high-efficiency, particle filtration arrests allergy causing pollen, mold spores and lung-damaging dust. These efficient General Aire air filters remove up to 94.2% of microscopic airborne particles. In addition, they help keeps A-coils, fan motors and ducts clean and operating at optimum efficiency and performance.

The General Aire TERSus 1200 System consists of a 3-part process: 1) The Merv 11 Electrostatic Particle Filtration; 2) The Ultraviolet Disinfection containing dual UVC lamps to kill disease-causing airborne bacteria, virus and mold on contact; and 3) the PhotoCatalytic Purification, which destroys toxic chemicals and odors. No Ozone is generated in this process, and the system only costs pennies per day for operation.

GeneralAire F1018 MERV11 16x25x4 Media Filter Specifications:

  • Part Number: 4571 or General Aire F1018
  • Includes 1 air filter
  • Easy to Install
  • Dimensions: 16" H x 25" W x 4"
  • Rated: MERV 11
  • Filtration Media: Electrostatic Particle Filtration  
  • Maintenance: GeneralAire air filters must be replaced every 6 months

General Aire TERSus 1200 Air Purification System should be maintained and cleaned on a regular basis for optimum results and peak performance. Air filters in this air purification system must be replaced every six (6) months, and the UV lamps must be replaced every twelve (12) months. GeneralAire can also be written as General Aire, GeneralAir and General Air.


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  • 4571 is used in the following Models
     General Air TERSus 1200

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