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WaterFurnace Geothermal 24x28x1 MERV 10 Airguard Air Filter 4 Pack Negative Air Machine If your unit has an Central Air Purification If your unit has an "H" channel between its air filters The HC500CD Air Purification System is required and sold separately Why Full Size Filters Matter electrostatically charged Fitment Full size 24" × 28" seal to reduce bypass Package 4 filters Note: Always verify sizing and replacement procedures in your WaterFurnace Owner’s Manual
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US$ 21740.00
US$ 499.50
US$ 79.95