18x24x4 MERV 8 Pleated Air Filter 3PK - 17.375x23.375x3.625 - Actual Size Reverse Osmosis this process happens more effectively

this process happens more effectively as the filter gets dirty

the filters efficiency jumps to over 90%

Bosch 644845 Refrigerator Water Filter

18x25x2 MERV 8 filters are a considerably better choice for healthier air

18x24x4 MERV 8 Pleated Air Filter 3PK - 17.375x23.375x3.625 - Actual Size Reverse Osmosis this process happens more effectively18x24x4 MERV 8 Air Filter Box of 3 Actual Size of Filter: 17. 375 x 23. 375 x 3. 625 Our goal is to provide the best air filters for every home. While pure air is always our goal, we know that some HVAC units are unable to use higher MERV rating filters. So, we also offer MERV 8 filters. Our 18x24x4 MERV 8 filters are the perfect filters for homes that have older HVAC units. Even though MERV 8 filters are not as efficient as higher MERV rating