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“Filterbuy 12x18x4 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)” has been added to your cart. View cart

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Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (3-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Original price was: $82.32.Current price is: $49.39.
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Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Original price was: $106.88.Current price is: $62.28.
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Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (5-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Original price was: $127.70.Current price is: $59.36.
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Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Original price was: $146.28.Current price is: $63.27.
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Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (1-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Original price was: $34.68.Current price is: $20.81.
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Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (12-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Original price was: $196.20.Current price is: $85.50.
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Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Original price was: $43.34.Current price is: $26.00.
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Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (3-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Original price was: $60.66.Current price is: $36.40.
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Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (5-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Original price was: $92.60.Current price is: $55.56.
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Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (6-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Original price was: $105.54.Current price is: $64.06.
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Filterbuy 12x18x4 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Original price was: $77.96.Current price is: $46.78.
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Filterbuy 12x20x2 Air Filter MERV 11 (MPR 1200) Allergen Defense Replacement (1-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 19.50 x 1.75)

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Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (3-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (5-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Filterbuy 12x18x4 Air Filter MERV 13 Optimal Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (1-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (12-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (3-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (5-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Filterbuy 12x18x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (6-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 17.50 x 3.63)

Filterbuy 12x18x4 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 17.50 x 3.63 Inches)

Filterbuy 12x20x2 Air Filter MERV 11 (MPR 1200) Allergen Defense Replacement (1-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 11.50 x 19.50 x 1.75)

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