---
product_id: 251085001
title: "Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches)"
brand: "filterbuy"
price: "1215.77 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Filter Buy"
url: https://www.desertcart.tn/products/251085001-filterbuy-13x21-5x1-air-filter-merv-8-dust-defense-4
store_origin: TN
region: Tunisia
---

# Precise 12.88x21.5x0.75 in size Eco-friendly recyclable materials MERV 8 rating traps 90% dust Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches)

**Brand:** filterbuy
**Price:** 1215.77 DT
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe smarter, live cleaner — upgrade your air game now!

## Quick Answers

- **What is this?** Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches) by filterbuy
- **How much does it cost?** 1215.77 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/251085001-filterbuy-13x21-5x1-air-filter-merv-8-dust-defense-4)

## 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

- • **Built to Endure:** Dual wire-backed beverage board frame resists heat up to 200°F and moisture for unmatched durability.
- • **Advanced Dust Defense:** MERV 8 synthetic media captures 90% of dust, pollen, mold & allergens for fresher air.
- • **Tailored Fit for Your HVAC:** Exact 12.88 x 21.50 x 0.75 inches ensures seamless replacement without guesswork.
- • **Long-Lasting Pleated Design:** 14 pleats per foot with electrostatic charge extend filter life 3x longer than fiberglass.
- • **Made in the USA with Purpose:** 100% American-made, recyclable components align with your eco-conscious lifestyle.

## Overview

Filterbuy’s 13x21.5x1 MERV 8 pleated air filters deliver superior dust and allergen capture with 90% efficiency, thanks to an electrostatically charged synthetic media and 14 pleats per foot. Designed for HVAC systems, these durable filters feature dual wire-backed beverage board frames that withstand heat and moisture, lasting three times longer than standard fiberglass filters. Manufactured entirely in the USA with recyclable materials, this 4-pack offers an eco-friendly, precise fit replacement that keeps your indoor air fresh and your system running efficiently.

## Description

The Filterbuy replacement air filter 13x21.5x1 (actual size: 12.88" x 21.50" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8 synthetic media (comparable with Clean Living Dust Defense MPR 600 & FPR 5) is recommended in most scenarios with its capability to trap 90% of dust particles while protecting your home or business from lint, pollen, mold, dander, and other forms of debris without impacting air flow. High quality construction features an electrostatically charged design with 14 pleats per foot that captures more harmful particles and prolongs the products lifespan by three times that of fiberglass models (replace every 90 days for best results). Plus, our industrial grade beverage board frames are paired with dual wire backings that significantly outperform traditional cardboard compositions by improving structural integrity with their ability to endure temperatures up to 200 degrees Fahrenheit and withstand exposure to moisture. Installation is also made simple with the addition of easy-to-understand arrows that help identify the direction of air flow and subsequently the way the filter needs to be placed. To top it off, all our components are 100% manufactured within the United States and designed with recyclable materials, providing an eco-friendly alternative to enhancing your air quality.

Review: Good quality filters - Good buy - not easy to find this size in stores. Good quality filters.
Review: Good filter - I need an odd filter. The service was good, fast delivery. Very happy.

## Features

- 13x21.5x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 12.88" x 21.50" x 0.75")
- MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from mold, pollen, and more while trapping 90% of dust particles without impacting air flow
- High quality construction features an electrostatically charged design with 14 pleats per foot that captures more harmful particles and lasts 3x longer than fiberglass models (replace every 90 days for best performance)
- Easy installation beverage board frames with dual wire backings improve structural integrity and outperform standard cardboard designs by resisting extreme temperatures
- Industrial grade components are 100% manufactured in the United States and designed with recyclable materials

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CJZ7R14 |
| Air Filter Construction | Pleated |
| Best Sellers Rank | 935,767 in DIY & Tools ( See Top 100 in DIY & Tools ) 117 in Boiler Filters |
| Brand | FilterBuy |
| Brand Name | FilterBuy |
| Common Applications | Allergen Reduction, High Strength |
| Compatible Devices | Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump |
| Compatible Hvac Systems | Commercial, Industrial, Residential |
| Compatible devices | Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump |
| Customer Reviews | 4.7 out of 5 stars 74,968 Reviews |
| Filter Airflow Direction | Variable |
| Filter Mounting Type | Slide In |
| Filter Shape | Rectangular |
| Included Components | Air Filters |
| Item Dimensions L x W x Thickness | 54.6L x 32.7W x 1.9Th centimetres |
| Item Type Name | Air Filter |
| Item Weight | 531 g |
| Item weight | 531 g |
| MERV Rating | 8 |
| MERV rating | 8 |
| Manufacturer | FilterBuy |
| Manufacturer Part Number | FBA_AFB13x21.5x1M8Apk4 |
| Material | Plastic Aluminum Polypropylene |
| Material Type | Plastic Aluminum Polypropylene |
| Max Temperature | 200 Degrees Fahrenheit |
| Max Velocity | 615 Cubic Feet Per Minute |
| Model Number | AFB13x21.5x1M8Apk4 |
| Number of Items | 4 |
| Product Grade | Replacement Parts |
| Product dimensions | 54.6L x 32.7W x 1.9Th centimetres |
| UPC | 717267050814 |
| Unit Count | 4.0 count |

## Product Details

- **Air Filter Construction:** Pleated
- **Brand:** FilterBuy
- **Compatible devices:** Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
- **Item weight:** 531 g
- **MERV rating:** 8
- **Material:** Plastic Aluminum Polypropylene
- **Max Temperature:** 200 Degrees Fahrenheit
- **Number of items:** 4
- **Product dimensions:** 54.6L x 32.7W x 1.9Th centimetres
- **UPC:** 717267050814

## Images

![Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches) - Image 1](https://m.media-amazon.com/images/I/81gvNo8ripL.jpg)
![Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches) - Image 2](https://m.media-amazon.com/images/I/81KT7kCaxwL.jpg)
![Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches) - Image 3](https://m.media-amazon.com/images/I/81QmLUpfj+L.jpg)
![Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches) - Image 4](https://m.media-amazon.com/images/I/71NqiPy6QSL.jpg)
![Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches) - Image 5](https://m.media-amazon.com/images/I/81G62DlEyuL.jpg)

## Available Options

This product comes in different **Size** options.

## 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 quality filters
*by A***R on 16 July 2026*

Good buy - not easy to find this size in stores. Good quality filters.

### ⭐⭐⭐⭐⭐ Good filter
*by R***E on 10 May 2026*

I need an odd filter. The service was good, fast delivery. Very happy.

### ⭐⭐⭐⭐⭐ Perfect
*by T***A on 7 March 2025*

⭐⭐⭐⭐⭐ (5/5 Stars) – Excellent Air Filter, Works Perfectly! I recently purchased this air filter, and I’m really impressed! It was super easy to install, and I noticed a difference in air quality almost immediately. The filter captures dust, pet dander, and other allergens effectively, making the air in my home feel much fresher. The build quality is solid, and it fits perfectly in my AC unit. Plus, it runs quietly, which is a huge plus. Compared to other filters I’ve used, this one lasts longer and offers great value for the price. Overall, I highly recommend it! Will definitely be purchasing again.

## Frequently Bought Together

- Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches)
- Aerostar 16 3/8x21 1/2x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, (Pack of 6) (Actual Size: 16 3/8"x21 1/2"x3/4")
- Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 19.50 x 0.75 Inches)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-18*