Skip to main content
18 In. x 20 In. x 1 In. 1000 MPR Allergen Defense Furnace Filter, MERV 11

Roll over image to zoom in

Filtrete 9845-4Click To Copy 18 In. x 20 In. x 1 In. 1000 MPR Allergen Defense Furnace Filter, MERV 11

Item #: 9845-4 by Filtrete

UPC #: 00051141909783

See reviewsSee reviews
See reviews summary
In Stock

$20.95

/each
SAVE UP TO 2.09

Buying in bulk

QUICK SHIPPING*Usually ships in 1 business dayIn stock: 401 units available
QTY
–
+
+ Add to Wishlist
Buy in Bulk & Save - See HowWatch Now

Shop with Confidence

30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.

Features
  • Helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment
  • Designed with exclusive Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through
  • With a 1000 MPR and MERV 11 rating, your Filtrete Filter will help capture many microparticles from the air passing through it
  • For optimal performance, make sure to change your filter at least once every 90 days
  • Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system
  • Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter

Material

Fiberglass

Filter Size

18x20x1

MERV Rating

11

Longevity

3 Month

MPR Rating

1000

Actual Length (in.)

19.81

Actual Thickness (in.)

0.81

Actual Width (in.)

17.81

Filter Length (in.)

20

Filter Width (in.)

18

Filter Thickness (In.)

1

Product Overview
Filtrete MPR 1000 Air Filter, made by 3M, helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment. Designed with exclusive Filtrete 3-in-1 technology, including a MPR 1000 and MERV 11 rating, your AC filter will help pull and capture countless microparticles - such as pet dander, smoke and smog - while letting cleaner air flow through. Your Filtrete Filter will also capture large particles, including lint, pollen and household dust. Use a 3-month pleated 1-inch home HVAC filter in your furnace, air conditioner or HVAC system. For optimal performance of your heating and cooling system or HVAC system, change your furnace filter at least every 90 days.