Sturdy filter at a good price
Your review: Bought filters to replace original filters in air exchanger. Filter frame is much sturdier than the original filter that came with my air exhanger. No issues with size or air flow so far. Searched the internet to compare prices and global seems to have the best deal on these.Gave 4 stars only because I've only had them in the system for about a month. Waiting to see if any issues arise.