Efficient and professional all the way . Website is easy to follow. The whole process was flawless will definitely recommend this company to my clients.
I I am an auto re-fill every 2 weeks to remove the drug smoking from my neighbor's townhouse which burns my sinuses and gave me walking pneumonia. Works as I had hoped! Thank you Filterbuy
Theres no way to really know if the filters are MERV13 or not. No markings on the filter, just a slip of paper in the 4 pack. I expected the filters to be more rigid. Some of the cardboard framing was crushed, affecting the filters rigidity. Regarding performance, the jury is still out.