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  • Model Number: 203372
  • Fits F50E1000, F50E1026, F50E1141, F50E1166, F50E1273, F50E1299, F50A1009 and F50A1025 electronic air cleaner models
  • Quality care manufactured - made with higher standards for design, assembly, procurement, and production
  • Honeywell Commercial Grade Pre-Filter
  • Traps larger particles in your air to help improve overall indoor air quality
  • Helps increase the efficiency of your Honeywell Air Cleaner
  • Two pre-filters are needed for Honeywell 20 x 25 air cleaner cells
  • Only one pre-filter is needed for the 20 x 12.5 air cleaner cells
  • Dimensions: 20 x 12.5 x 11/32 in.

The Honeywell 203372 Electronic Pre-Filter is a genuine product from Honeywell's Commercial Air Products Division. Honeywell Commercial Filters emphasize the higher standards for design, assembly, procurement and production. This Genuine Honeywell Filter works especially well in the removal of larger particles in the surrounding air. This allows for a significant improvement to overall air quality by increasing the overall efficiency of your Honeywell Air Cleaner. The Honeywell 203372 Replacement Pre-Filter is compatible with the following air cleaners: F50E1000, F50E1026, F50E1141, F50E1166, F50E1273, F50E1299, F50A1009, F50A1025, (SINGLE), REPLACES PART #136389.

To ensure stated air cleaner performance, use only Genuine Honeywell Filters

Product Details
Product Specs
Commercial Air Filters
Honeywell Prefilter For F50E and F50A Air Cleaners - 20 x 12.5 x 11/32 in. Video

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203372 customer reviews

Overall Rating

14 Reviews
14 customers recommend this product
Honeywell Prefilter For F50E and F50A Air Cleaners - 20 x 12.5 x 11/32 in. Reviews
John G
August 29, 2022
Verified Purchase
air filter

Very hard to find to 1990 unit. Excellent service and delivery. Unfortunately, the actual unit died 15 years ago, but I still need the filter.

Merrilyn P
April 18, 2022
Verified Purchase

thank you so much for the replacement prefilters they are working fine

John M
July 26, 2021
Verified Purchase


Rosalyn Lueck-Mammen
February 4, 2021
Verified Purchase
Exactly what we needed

We measured our old prefilter that had developed a frayed edge and checked the model number, but couldn't find it at any of the boxstore sellers like that one that starts with A. Decided to order directly from this Honeywell site. Price was reasonable, delivery was relatively quick and the prefilters fit perfectly. They are doing the job and we are happy with this purchase.

Scott Harada
December 21, 2020
Verified Purchase


Ankur Patel
November 2, 2020
Verified Purchase
Works as expected

Fast delivery, items as described.

Ken OBara
March 31, 2020
Verified Purchase
pre filters by mail

I got what I ordered in good condition and in a timely manner. When needed I will order the same item again in the same way.

John Mattson
March 16, 2020
Verified Purchase
Replacement filters for Honeywell Air Cleaner

I'm very pleased that Honeywell has replacement metal filters for a 30 yo electrostatic air purifier. The filters are fragile and break easily but when intact work well. I appreciate Honeywell's support for such a dated system that is still effective.

Danh Lam
January 28, 2020
Verified Purchase

One of two filters in the original order is defective that happens sometimes BUT replaced professionally and courteously ... which I very much appreciate.

John Mattson
January 1, 2020
Verified Purchase
Replacement prefilter

I was very impressed that Honeywell had the exact 4 prefilters aluminum grates for a nearly 30 year old Air Cleaner. They were easy to order and arrived promptly.

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