Filtrete packaging shows 4-pack set for easy replacement
Filtrete filter close-up highlighting MERV 11 label and 1000 MPR
Filtrete filter installed in HVAC unit showing clean air path
Filtrete filter close-up capturing dust and small particles
Filtrete filter capturing pet dander and pollen in home air
Filtrete Smart App reminder screen for changing filters
Actual size label reading 17.68 x 19.68 x 0.81 inches
Filtrete four-pack filters stored for home use
Filtrete filter installed, air flowing through for cleaner air

Filtrete

Filtrete 18x20x1 Air Filter – MERV 11, MPR 1000 | Allergens & Pet Dander | 4-Pack (Actual Size 17.68 x 19.68 x 0.81 in)

High-performance tools and home improvement made for confident daily results

$61.88

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Why customers choose TaskHolt Tools

Clean air starts with Filtrete 18x20x1

Experience noticeable air freshness with this 4-pack of Filtrete 18x20x1 MERV 11, MPR 1000 filters. Sized for standard HVAC slots, the actual size is 17.68 x 19.68 x 0.81 inches, ensuring a snug fit in many furnaces, air conditioners, or whole-HVAC systems.

How Filtrete 3-in-1 filtration works

Filtrete 3-in-1 technology combines a dense filter medium with a designed airflow path to pull in and trap particles while letting cleaner air pass through. With a 1000 MPR rating and a MERV 11 level, the filter targets a wide range of particles.

  • Captures pet dander, smoke particles, pollen, and household dust
  • Supports cleaner air flow to help reduce surface dust buildup
  • Asthma and allergy-friendly certification provides added reassurance

Real-world uses and benefits

In homes with pets or in urban areas with higher pollution, this filter can help maintain steadier airflow and a more comfortable indoor environment. A four-pack helps you stay prepared for seasonal changes without repeated shopping.

  • Works with furnaces, air conditioners, and other HVAC systems
  • Four filters support ongoing protection across several months

Maintenance made simple

For optimal performance, replace every 90 days. Use the Filtrete Smart App to scan the packaging barcode and set reminders for 30, 60, or 90 days, keeping you on schedule without guesswork.

Brand trust: Filtrete is a widely recognized HVAC filter brand, and this line carries asthma and allergy-friendly certification along with the No. 1 brand status in a 2022 Ipsos study.

FAQ

Q: What size does this Filtrete filter fit?

A: Actual size is 17.68 x 19.68 x 0.81 inches; designed for 18x20x1 housings.

Q: How often should I replace this filter?

A: Replace every 90 days for best results; app reminders are available to help you track changes.

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