To start I didnt receive the filters in 24 hours. The worst part is that they dont even fit my furnace. I know both were 20x20x 4 but i need an actual size of 19-15/16x 19-3/4 x 4-3/8. Which filterbuys 20x20x4 are not.
Not same quality as 3M or Honeywell. Bought 6 and filter looks like loose, fuzzy paper particles. Accordian pleats were not uniform, so i question the Merv 13 filtration capability.