3M Filtrete 1550 Allergen Reduction 4-Inch Ducted Filters

Available in Three Sizes to Fit The Following Units:
Please be sure to select the proper filter for your unit

16x25x4
(actual size: 15 3/4 x 24 7/16 x 4 3/16)
for Honeywell 16x25x4
for Trion Air Bear 16x25x4

20x20x4
(actual size: 19 3/4 x 19 3/4 x 4 3/16))
for Honeywell 20x20x4

20x25x4
(actual size: 19 3/4 x 34 7/16 x 4 3/16))
for Aprilaire / Space-gard 2200 & 2250
for Honeywell 20x25x4
for Trion Air Bear 20x25x4

NOTE: these filters are 3M Filtrete replacement filters for the brands shown above. The listed trademarks and company names for Honeywell, Trion Air Bear and Aprilaire / Space-gard are used for identification purposes only.

Whole house air cleaners are becoming increasingly popular in home heating and cooling systems, and are commonly placed in new constructions or when replacing older heating and cooling systems.

Filtrete Media Air Cleaner 4" Filters are designed for whole house air cleaners with housings that accommodate 4-inch nominal size filters, and carry a 3M Filtrete 1550 microparticle rating. The filters help to attract and capture particles like pollen, mold spores, and dust mite debris. For residential use only.