BNX 20x20x1 MERV 11 Air Filter 6 Pack - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters - Removes Dust, Mold, Pollen, Lint, Pet Dander, Smoke, Smog

They are as described. Quality filters.

Very easy to install. Remove the old filters, clean up, then turn the AC on and the air intake will pull up the filters into place.

In size and appearance they matched my existing filters, so thats good. I dont have any way to verify their filtration claims, but they seem correct. The company is pretty young, formed early in the Covid epidemic, and built a good reputation selling Made in USA masks and filters, so Im pretty comfortable using their filters. A word of caution - if you are switching from low MERV filters in an old HVAC system to high MERV filters for the first time, check with your HVAC tech to ensure the blower can handle the flow restriction. The basic MERV 2 fiberglass filters were designed to just protect the blower, not your lungs, and the system was designed expecting that (minimal) level of flow restriction. The added restriction of a MERV11 or MERV13 filter can cause excessive blower wear and premature failure. Which might be a good excuse to upgrade the old system anyway :-)