Customer Reviews for Filterbuy - 21x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Customer Rating
3
the first filter I used
on January 26, 2021
Posted by: Ryan K.
the first filter I used in my main intake started to whistle loudly and hum after a few days. Replaced it with another new filter from the package and the issue went away - near-silence