Features:

• Fits Research Products Model No. 2400 (Part #401)
• Original accordion filter.
• Package contains 2 Filters.
• Improves air quality in the home!

Editorial Review:

Reaches 99% efficiency on particles 5 microns or larger. Improves efficiency and increases longevity of HVAC systems when properly used and maintained. High efficiency filter media collects small dust particles before they can collect on your coils. This product is listed and rated by Underwriters Laboratories as U.L. Class 2.

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