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12x24x4 MERV 13 Air Filter - Box of 3
Chlorine Capacity: 9
Air vent and flush directly at the filter head without any disconnection of tubes
Grooved for increased surface area
This Aprilaire 4231 yellow orifice is designed to allow a specific amount of water to go into the humidifier which is unique to your model humidifier
16x24x2 MERV 11 Pleated Air Filter 6PK - 15.375x23.375x1.75 - Actual Size 20x30x1 12x24x4 MERV 13 Air Filter16x24x2 MERV 11 Air Filter Box of 6 Actual Size of Filter: 15. 375x23. 375x1. 75 Air filters are ranked in a minimum efficiency rating value (MERV) system. The higher the MERV rating, the better the filter can filter out all airborne particulates. Since we are constantly trying to improve indoor air quality, it only makes sense that we would offer air conditioner filter MERV 11. 16x24x2 MERV 11 filters are right on the cusp of being classified as
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