---
product_id: 99852061
title: "Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75)"
brand: "filterbuy"
price: "680 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Filterbuy"
url: https://www.desertcart.ro/products/99852061-filterbuy-20x21-5x1-air-filter-merv-11-superior-pet-allergy
store_origin: RO
region: Romania
---

# 14 pleats/ft for max filtration Made in USA, recyclable materials MERV 11 captures 95% dust Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75)

**Brand:** filterbuy
**Price:** 680 Lei
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe Better, Live Smarter — Upgrade Your Air Game Today!

## Quick Answers

- **What is this?** Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75) by filterbuy
- **How much does it cost?** 680 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/99852061-filterbuy-20x21-5x1-air-filter-merv-11-superior-pet-allergy)

## Best For

- filterbuy enthusiasts

## Why This Product

- Trusted filterbuy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proudly American-Made Quality:** Manufactured 100% in the USA, trusted by millions for dependable indoor air quality and peace of mind.
- • **Allergen & Pet Defense Mastery:** MERV 11 synthetic media traps 95% of dust and allergens, perfect for pet owners and sensitive noses.
- • **Durability Meets Sustainability:** Robust beverage board frames with dual wire backing resist warping and extreme temps, crafted from recyclable materials.
- • **Universal Fit, Effortless Upgrade:** Precision-sized 19.88 x 21.5 x 0.75 inches fits most HVAC systems for seamless installation and optimized airflow.
- • **Built to Last, Designed to Perform:** Electrostatically charged pleats last 3x longer than standard fiberglass filters—replace only every 90 days.

## Overview

Filterbuy’s 20x21.5x1 MERV 11 air filters deliver superior pet and allergy defense with 95% dust capture using electrostatic pleated media. Designed for universal HVAC compatibility, these durable, recyclable filters feature 14 pleats per foot for enhanced filtration and last 3x longer than fiberglass alternatives. Proudly made in the USA, they ensure healthier indoor air with easy installation and reliable performance every 90 days.

## Description

Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75) - desertcart.com

Review: Good find for random sizes! - I searched high and low for the right size of filter my house is older so it is harder to come by but these were wonderful! Great quality, the airflow is wonderful as well! Best value for the price as the filter functions just as it says and protects your house! My household noticed a difference within 24 hours! We do have a small dog and it works great with her!
Review: Great choice - Significantly reduces common allergens and particulates compared with standard filters. Good quality, fits perfectly

## Features

- UNIVERSAL COMPATIBILITY: 20x21.5x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.88" x 21.50" x 0.75")
- MERV 11 PERFORMANCE: Protect your home or business from allergens, pets, and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% of dust without restricting air flow
- LONG-LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for optimal performance)
- SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures
- MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality that is trusted by millions of homes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N01O0EK |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #435 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Furnace Filters |
| Brand Name | Filterbuy |
| Color | Gold |
| Compatible Device | Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump |
| Customer Reviews | 4.5 4.5 out of 5 stars (20,037) |
| Date First Available | November 6, 2016 |
| Included Components | Air Filters |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | AFB20x21.5x1M11pk2 |
| Manufacturer Warranty | Parts |
| Material Type | Aluminum, Plastic, Polypropylene |
| Model Info | AFB20x21.5x1M11pk2 |
| Part Number | AFB20x21.5x1M11pk2 |
| Product Dimensions | 19.88 x 21.5 x 0.75 inches |
| Special Features | Dust Collection, Easy to Install, Removable |

## Product Details

- **Air Filter Construction:** Pleated
- **Brand:** Filterbuy
- **Compatible Devices:** Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
- **Item Weight:** 0.01 Ounces
- **MERV Rating:** 11
- **Material:** Aluminum, Plastic, Polypropylene
- **Max Temperature:** 200 Degrees Fahrenheit
- **Number of Items:** 1
- **Product Dimensions:** 21.5"L x 19.88"W x 0.75"Th
- **UPC:** 717267029575

## Images

![Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75) - Image 1](https://m.media-amazon.com/images/I/51Crimj2UgL.jpg)
![Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75) - Image 2](https://m.media-amazon.com/images/I/51U63ClQ9ML.jpg)
![Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75) - Image 3](https://m.media-amazon.com/images/I/51WYCHCtVkL.jpg)
![Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75) - Image 4](https://m.media-amazon.com/images/I/51fHDnH5eRL.jpg)
![Filterbuy 20x21.5x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.88 x 21.50 x 0.75) - Image 5](https://m.media-amazon.com/images/I/51hfmQpw7XL.jpg)

## Questions & Answers

**Q: Why should I change my air filter?**
A: To maintain a healthy lifestyle, as breathing dirty air can put you at risk to develop asthma, allergies, and other respiratory ailments. Plus, old filters can cause system defects which may lead to unwanted expenses via energy costs and repairs.

**Q: When should I change my air filter?**
A: We generally recommend replacing your filter every 90 days to keep your system running efficiently and air clean. But this is subject to change based on filter size and variable factors for pet owners, allergy sufferers, homes with children, etc.

**Q: Will these air filters fit my system?**
A: Most of our filters are universally compatible and will work with any furnace, air conditioner, heat pump, or HVAC system as long as you choose the proper size. But if you see a specific brand name on a listing, make sure it matches your unit model.

**Q: How many air filters do I need?**
A: This varies for every customer depending on specific needs such as the number of vents in your home. However, our selection includes package quantities that range from 1 to 12 filters, so no matter what your situation may be, we've got you covered.

**Q: How do I change my air filter?**
A: After finding the right size, turn off the power supply and remove the cover from your intake vent before taking out the old filter. Then just insert your new filter to match the direction of air flow, replace the cover, and turn the power back on.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good find for random sizes!
*by K***R on December 26, 2025*

I searched high and low for the right size of filter my house is older so it is harder to come by but these were wonderful! Great quality, the airflow is wonderful as well! Best value for the price as the filter functions just as it says and protects your house! My household noticed a difference within 24 hours! We do have a small dog and it works great with her!

### ⭐⭐⭐⭐⭐ Great choice
*by S***A on January 19, 2026*

Significantly reduces common allergens and particulates compared with standard filters. Good quality, fits perfectly

### ⭐⭐⭐⭐⭐ it works but not happy with the fit the length is ok
*by D***L on January 26, 2026*

These are not 4" wide , they are 3-3/4" the old one setting next to the new one. I have had these for a few months cause I purchased after I installed my last one so Bought these for replacements when needed . Or else Id return them ! I dded duct tape on one side so It doesnt pull air from around the side

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**Shop now:** [https://www.desertcart.ro/products/99852061-filterbuy-20x21-5x1-air-filter-merv-11-superior-pet-allergy](https://www.desertcart.ro/products/99852061-filterbuy-20x21-5x1-air-filter-merv-11-superior-pet-allergy)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-01*