Bests & Worsts Reviews from Amazon

This is a AMAZING filter from Filtrete. I currently live with a stubborn pack a day smoker that refuses to go outside to smoke. Unfortunately I currently live in dallas,tx where its unbearably hot outside ten months out of the year, so opening up a window to air out the two bedroom apartment i live in is not a option. The central air always runs which stirs the smoke to every room of the apartment (including mine.) So after researching HEPA air purifiers, a suitable purifier was $500+, which is out of the question currently. I found " Toms Beter Box Fan" website where he had instructions on how to make a DIY Box Fan purifier for the cost of two filters and a box fan. I decided to make one. Some people put a 20x20x1 filter on the back of the fan and call it good, not the best idea. The cheapo motors on a Walmart box fan are not designed to take the strain. So to solve this you simply take two 20x25x1 filters and "hinge" them together onto the intake side of the box fan, cut & tape cardboard from your amazon box onto the top of the filters creating a tight seal. BOOM a DIY Purifier for ~$50! I WAS SO HAPPY when Filtrete came out with these 2800 series filters! The highest quality available in these sizes that are capable of filtering tobacco smoke! Also i loved the 2 pack they come in (perfect for my double filter box fan.) After the 2 pack filters arrived all i needed was some white gorilla duct tape, box fan, knife and 30mins to create my air purifier. These filters work on ULTRAFINE PARTICALS like smoke, smog and 2.5m pollution. After running my better box fan in the smokers room for a just a hour the air cleared and could just see the tar and yellow filth on the filter surface. I HIGHLY RECOMMEND THIS 2800 SERIES FILTERS! Worth the extra money, solid heavy duty construction made to last as well.