PRODUCT UPDATE:

Update as of 15 OCT 2024

MPR: Micro-Particle Performance Rating, a filter rating system developed by 3M to measure the effectiveness of air filters in capturing small particles, particularly those under 1 micron.

FPR: Filter Performance Rating, a system created by The Home Depot to categorize the performance of air filters based on their ability to capture various particle sizes.

When customers ask for the MPR or FPR ratings of our HVAC filters, 

please let them know that we do not provide either rating for our products. 

Instead, we use the MERV (Minimum Efficiency Reporting Value) rating, which is the standard measure for filter effectiveness established by the American Society of Heating, Refrigerating, and Air Conditioning Engineers.