AIRx 17.5x21x4.5RR-ALLERGY | Our#: 176985

17.5x21x4.5 AIRx ALLERGY Rheem/Ruud RXHF-E17AM10 Replacement Air Filter - MERV 11

12 review(s)
Average rating 5.0/5
5 stars
4 stars
3 stars
2 stars
1 star

AIRx 17.5x21x4.5RR-ALLERGY | Our#: 176985

  •  Fast Shipping & Free Returns
  •  100% Compatibility Guarantee

Reduce common allergy symptoms

  • Reduces allergy irritating particles
  • Captures allergens like dust, mold spores, pet dander, dust mite debris and more
  • Lessens odors from car fumes & smog
  • Creates cleaner indoor air
  • Actual Dimensions: 17 ¼" x 20 ¾" x 4 ⅜"

5 people in your area recently purchased this product!

  •  Fast Shipping & Free Returns
  •  100% Compatibility Guarantee
Frequently Purchased Together

Product Details

Airborne contaminants make indoor air unhealthy. Remove these particles with replacement filters that fit into Rheem and Ruud air cleaners. The aftermarket replacement filter includes deep pleats that securely trap contaminants. Rated MERV 11, it captures large and small particles of dust, dirt, mold, pollen, dander and odor. Made from moisture-resistant materials, the filter will not allow bacteria, mildew or mold to grow. Sturdy support fingers give the filter rigidity. Replace the filter once every six months for healthy and clean indoor air.

  • MERV 11
  • deep pleats trap airborne contaminants
  • resists moisture, mildew, mold or rust in any climate
  • sturdy support fingers keep the filter rigid
  • replace every six months
  • aftermarket product replaces filters used in Rheem / Ruud Air Cleaner model RXHF-E17AM10 17"
  • replaces Protech 540010
  • 17-1/2” x 21” x 4-1/2" nominal size
  • 17-1/4” x 20-3/4” x 4-3/8" actual size

Do you want to know about the technical specs?

Nominal Dimensions
17 ½ x 21 x 4 ½"
Actual Dimensions
17 ¼ x 20 ¾ 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:

National Filter Sales:

How to change your furnace/air-conditioner/HVAC air filter

Estimated time: 10 minutes or less


  1. Determine the location of your filter

    Your forced air system will be similar, whether or not it is a heating (furnace) or cooling (AC) system – or both. The furnace filter housing/slot is located right next to the heating/cooling system’s air handler or blower. Your filter(s) may also be located in a return grille on the wall or ceiling of your home.

  2. Determine the type/size of filter that you use

    Typically, the dimensions or part number of the filter will be printed on the filter frame. Use this information to order a new filter.

  3. Purchase a new air filter from

    Visit and purchase a new filter. Use our filter finders to verify the correct match.

  4. Remove the old filter

    Turn off the power to the heating/cooling system and remove the old filter from its housing/slot and discard.

  5. Insert the new filter

    Pay attention to any airflow direction arrows printed on the frame of the new filter. Install the filter by sliding it into the filter housing/slot with the airflow arrow pointing towards the blower. If installing the filter in a wall or ceiling grille – the airflow arrow should point towards the wall or ceiling. Turn on the power to the forced air system.

    Enjoy cleaner air!