They seem to be good filters, although very expensive. Theres got to be a cheaper alternative. Date box on filter is upside down. Does that mean the airflow arrow could be backwards too? That makes the filter placement very confusing. I dont know if I can trust this filter or company.
Seems just as good as the store bought ones. Far as flow cant really comment on that since I went from a merv 13 to a merv 11. Nice to order what you want not what they tell you to order ( last place I was ordering from was more expensive and orders up to 6) I change mine every 6 weeks so I do 9 per year. So far really impressed
I was very disappointed in the gold filters that I received.1. The filter was poorly finished the material puckered up at the extremities.2. On one side of the filter it wasn't even lined, just raw material.I would not recommend these to anyone !!!