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popularneomatrixviper posted Today 01:51 AM
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popularneomatrixviper posted Today 01:51 AM

Filtrete Air Filter 4”, MPR 1900 MERV 13, Premium Allergen, Bacteria and Virus Filter, Electrostatic Air Cleaning Deep Pleat Filter, 2-pack $39.99 ( Various Sizes) Free Shipping

$40

$50

20% off
Costco Wholesale
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https://www.costco.com/p/-/filtre...&langId=-1

$10 OFF
$10 manufacturer's savings is valid 5/11/26 through 6/7/26. While supplies last.
Limit 10 per member.

1900 MPR and MERV 13 Rating
Designed With Filtrete™ 3-in-1 Technology
Helps Capture Countless Microparticles Such as Pet Dander, Smoke, and Bacteria
Also Captures Large Particles Like Lint, Pollen, and Household Dust
This Furnace Filter is Certified Asthma and Allergy-friendly®
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https://www.costco.com/p/-/filtre...&langId=-1

$10 OFF
$10 manufacturer's savings is valid 5/11/26 through 6/7/26. While supplies last.
Limit 10 per member.

1900 MPR and MERV 13 Rating
Designed With Filtrete™ 3-in-1 Technology
Helps Capture Countless Microparticles Such as Pet Dander, Smoke, and Bacteria
Also Captures Large Particles Like Lint, Pollen, and Household Dust
This Furnace Filter is Certified Asthma and Allergy-friendly®

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Today 06:16 AM
359 Posts
Joined Nov 2020
drl136usToday 06:16 AM
359 Posts
Would these been good for making a Corsi-Rosenthal Box? I've been wanting to try one out for a few years, but Merv 13 20x20x2 4-packs are just too expensive after 2020.
Today 06:19 AM
167 Posts
Joined Jul 2024
RelaxedCreature628Today 06:19 AM
167 Posts
Get the 20"x20" size and tape it onto box fan for a poor man HEPA air cleaner.

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