Is Filter Frame Strength Important?
Yes, it is important for a filter frame to withstand pressure created by air movement through the filter without bending or collapsing. If a frame bends, it can allow unfiltered air to bypass the filter, or if the frame collapses, it can be drawn into the furnace fan. Filtrete filters have reliable frame strength because they were designed to hold up even under severe conditions. What Is MERV? Merv 12 at 1.5 meters per second MERV stands for Minimum Efficiency Reporting Value. It is a number from a test method designed by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). The number is intended to help people compare filters. Generally speaking, a higher MERV indicates better filter performance. This Filtrete filter receives a MERV 12, the highest value obtained by any one-inch residential filter available. ASHRAE designed MERV to represent, with a single number, a filter’s performance over many different particle sizes. However, the MERV calculatio
