Very Nice... Filterbuy tracked purchase to the door. The filters are "Spot on" fit to the HVAC. A spell of low humidity, wind and smoky, particulate air from forest fires, the first of the month and the filters cleared the air in the house of particulate matter and odor. So, a timely welcome relief from the bad air.
I have already done a review, but said it was too soon for me to judge since I am still using the originally installed filter from the HVAC contractor. Maybe in 6-8 months I will have changed filters and seen any result.
fikters are great. but you consistent emails are crazy. Whoever is doing you outreach to established customers is scaring me away!! its a furnamce filter!! not tht hard , I habve 500 differeny chaises stop wih thes4 every week crazt emails, and yes, REMOVE ME FROM Your LISTDavid LeveyMcKinnery texas 75072
tape this filter to a 20 inch box fan and it will clean the air in an average house about every 15 minutes. MERV 13 filter removes virus size particles. a 4 inch filter is less strain on the fan and allows more air flow than 1 inch.