AIRx 21x24.5x4.5RR-ALLERGY | Our#: 176991

21x24.5x4.5 AIRx HEALTH Rheem/Ruud RXHF-E24AM13 Replacement Air Filter - MERV 13

AIRx 21x24.5x4.5RR-ALLERGY | Our#: 176991

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Protect more sensitive lungs

  • Highest rated filter to reduce most pollutants
  • Reduces pollen, dust, lint, dust mite debris, pet dander & mold spores
  • Lessens odors from car fumes & smoke
  • Removes bacteria & virus carriers
  • Creates cleaner indoor air
  • Actual Dimensions: 20 ¾" x 24 ¼" x 4 ⅜"

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Product Details

21x24.5x4.5 AIRx HEALTH Rheem/Ruud RXHF-E24AM13 Replacement Air Filter - MERV 13 (actual dimensions 20-3/4" X 24-1/4" X 4-3/8") - Rated MERV 13

Replaces media filters used in Rheem / Ruud model RXHF-E24AM13 24" Air Handler Media Air Cleaner Cabinets.  Replaces Protech 540020, PD540044 

NOTE:  This filter is not manufacturered by Rheem or Ruud. 

These deep-pleated filters are manufactured to fit in Rheem and Ruud Media Exact Fit Air Cleaners. Expect comparable quality of construction at a value price!! 


  • Moisture resistant frame remains sturdy even in high humidity
  • Rust resistant galvanized wire downstream gives the filter rigidity and holds media in place after installation  
  • Built-in support fingers hold pleats in place and allow for maximum dust holding  
  • The MERV 13 rating on this filter provides an extra level of protection against airborne pollutants.

Do you want to know about the technical specs?

Nominal Dimensions
21 x 24 ½ x 4 ½"
Actual Dimensions
20 ¾ x 24 ¼ x 4 ⅜"
Filter Media
Electrostatically charged 100% synthetic gradient media that does not support microbiological growth
Filter Support Grid
30 gauge galvanized expanded metal grid
Moisture resistant double-wall beverage board
Max Temperature
180F (82C) continuous service, peak 225F (107C)
Max Humidity
Resistant to 100% R.H.

Replaces These Filters: