You Are Here: Home > Products > Parts > GeneralAire Parts > Generalaire Air Filters > 20x20x5 AIRx ALLERGY ReservePro 4531 Replacement Air Filter - MERV 11
20x20x5 AIRx ALLERGY ReservePro 4531 Replacement Air Filter - MERV 11
(case of 2 Filters)

click to zoom
(6 more images)

In Stock
Price: $68.08
($34.04 ea)
case of 2 Filters

Is this the right air filter for you?

If you want to reduce particles in your home that aggravate your allergies, this is the filter for you!  Shopping for filters doesn't have to be difficult.  We'll delivery quickly to your front door.

  • Quality 5" pleated air filter offers improved filtration and longer service life over common 1" filters 
  • MERV 11 rating means the filter attracts common large household allergens like dust, pollen, and mold spores
  • Replaces the ReservePro part # 4531 - nominal size 20x20x5
  • Foam gasketing prevents air bypass
  • Replace every 6 months under normal use
  • Made with pride in the USA
  • Fast Shipping and Free Returns on all filters

What does this air filter remove?

What part numbers does this filter replace?

  • ReservePro 4531, 5FM2020

What air cleaners does this filter fit?

  • GeneralAire MAC2020
  • Source 1 S1-MAC1020205 
Do you want to know about the technical specs?

Nominal Dimensions 20 x 20 x 5"
Actual Dimensions 19-11/16" x 20-11/16" x 4-15/16"
Filter Media Electrostatically charged 100% synthetic gradient media that does not support microbiological growth
Filter Support Grid 30 gauge galvanized expanded metal grid
Frame Moisture resistant double-wall beverage board
Max Temperature 180F (82C) continuous service, peak 225F (107C)
Max Humidity Resistant to 100% R.H.