Skip to content
Free Local Pickup Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted American Hardware Brands

Filtrete 18 in. W X 24 in. H X 1 in. 300 MPR Pleated Air Filter

Experience cleaner air with the Filtrete 18 in. W X 24 in. H X 1 in. D 300 MPR Pleated Air Filter 1 pk, designed to capture dust and allergens effectively.
Filtrete MPN 321-4 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $6.99. Our online price is $7.59.
$7.59
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within for same-day shipping
Cases of 4 · Order in multiples of 4

Sold by the Case · Save 15%

Take $4.56 off your case at checkout

Case of 4 · List Price $30.36
15% OFF with code at checkout $25.80
Use Code at Checkout

This product is packed and shipped from our distribution network as a complete case of 4. Apply casediscount at checkout to take 15% off your order.

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Introducing the Filtrete 18 in. W X 24 in. H X 1 in. D 300 MPR Pleated Air Filter 1 pk, your ultimate solution for maintaining a clean and healthy indoor environment. Designed with advanced filtration technology, this air filter effectively captures a variety of airborne particles, ensuring your home remains fresh and breathable.

Key features of the Filtrete 18 in. W X 24 in. H X 1 in. D 300 MPR Pleated Air Filter 1 pk include:

  • Electrostatic Design: Attracts and traps dust, pollen, and other allergens.
  • High Efficiency: Rated at 300 MPR, this filter provides superior performance in removing harmful particles.
  • Cardboard Frame Material: Durable and built to withstand regular use while maintaining optimal airflow.
  • Easy Installation: Fits seamlessly into standard air filter slots for quick and hassle-free replacement.

While the Filtrete 18 in. W X 24 in. H X 1 in. D 300 MPR Pleated Air Filter 1 pk excels at filtering out pollen and dust, it does not filter bacteria or viruses, making it ideal for households focused on improving air quality without compromising on safety. Its pleated design increases the surface area, enhancing its dust-holding capacity and extending the time between replacements.

Invest in your health and comfort today. Upgrade your air filtration system with the Filtrete 18 in. W X 24 in. H X 1 in. D 300 MPR Pleated Air Filter 1 pk and experience cleaner air in every room. Order now and breathe easier!

The Details Specifications

Brand Filtrete
SKU 4314506
UPC 051131974982
Unit 0
Case Pack Quantity 4 per case
Retail Unit Quantity 4
Unit of Measure 0 0
Dimensions (L × W × H) 4 × 18 × 24
Weight 4 lbs
Cubic Feet 0.2858 ft³
Country of Origin NETHERLANDS
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare