Aerostar20x20x1 MERV 13 - 4 Count - Pleated HVAC, Furnace & Air Conditioner Filters - Removes Bacteria, Dust, Cold & Flu Germs, Lint, Mold, Pet Dander, Allergy-Causing Pollen, Smog, Smoke & Viruses

Good filters, good value.

I use these to build the corsi-rosenthal box filter and they work great.

I use these filters for my box fan/air filter. They work quite well in eliminating odors, smoke from cooking and particulates from the air. This is the link for the Lasko Box Fan/Air Filter: https://www.amazon.com/Lasko-FF305-20-inch-Purifier-Purifying/dp/B089P1Z38J/ref=sr_1_8?crid=25EDOB7Y3Q4G&dib=eyJ2IjoiMSJ9.QbY-vkHueNcIjfoc15eAn7JUdJv_1Rc8kVRXdTGr4rXBuMl0PLJT7wc0aUYSD5h46rgYjXtOJi7MxdDdW7gRuDbvwEVx4nnKp68e7DLcNdjgKC5CM3hP-CeI0aUzuMJKU9-KglQBXWGOfr03-0d8tHB-NAw_fEUnUmCg_EAPBpBwJ_J75Y0zIlGUwgGERuIOhbGpT4vQwFkGDQAUL1DaDhg83kyDUXn13QgRNfONpazZ-05K0FtfOL0_fTe1XAP9iRpv-0B8yyIrsAm2S1rOZ-Zcg2GV-OnXJYZPvIcQOoI.MH3ntO8j_3c76Na7N-kqW14x_OQNKlyTFSE1uyJpITg&dib_tag=se&keywords=box+fan+air+filter&qid=1705691340&sprefix=box+fan+air+filter%2Caps%2C146&sr=8-8

These filters are comparable to Filtrete brand at a more reasonable cost. I have dogs in the home so the filters must be changed more often. Happy with these.

Filter works great cleaning the air and does not cause a large pressure drop in HVAC system.

I recently moved into an apartment. The people who lived here before had a short haired dog. I have allergies. The place smelled like dog and I was experiencing congestion. After extensivly vacuuming and scrubbing the carpets, I added these filters to the air system. The place smells like a normal home now and my allergies have been relieved. Each day is better. MERV 13 filters are designed with pet dander and other tiny allergens in mind. I'm happy I tried these. They make a difference.

I like it. It does the job well. I use this to create a makeshift air purifier

EXCELLENT FURNACE FILTER