---
product_id: 60534426
title: "4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320"
brand: "seal supply"
price: "18247 Ft"
currency: HUF
in_stock: true
reviews_count: 8
url: https://www.desertcart.hu/products/60534426-4-pack-of-hrf-k1-carbon-activated-pre-filters-precut
store_origin: HU
region: Hungary
---

# 36,910 sq yds area 20.5" x 5.75" x 0.2" 30g/sq ft carbon 4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320

**Brand:** seal supply
**Price:** 18247 Ft
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe Fresh, Live Well!

## Quick Answers

- **What is this?** 4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320 by seal supply
- **How much does it cost?** 18247 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/60534426-4-pack-of-hrf-k1-carbon-activated-pre-filters-precut)

## Best For

- seal supply enthusiasts

## Why This Product

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

## Key Features

- • **Thicker is Better:** Our pre-filters boast a higher carbon content for superior odor and dust capture.
- • **Precision Perfect Fit:** Machine-cut for an exact fit, ensuring optimal performance every time.
- • **Unmatched Surface Area:** One square foot equals the surface area of 24 football fields!
- • **Proudly Made in the USA:** Quality you can trust, designed and manufactured in the United States.
- • **Breathe Easy, Live Longer:** Extend the life of your air purifier and HEPA filter.

## Overview

The Seal Supply 4 Pack of HRF-K1 Carbon Activated Pre Filters is designed to enhance the performance and longevity of your Honeywell air purifiers. With a high carbon content and precision cutting, these pre-filters effectively trap odors and dust, ensuring cleaner air and a longer lifespan for your HEPA filter.

## Description

4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320

## Features

- EXTEND THE LIFE OF YOUR AIR PURIFIER - Carbon activated pre-filters extend the life of your HEPA filter, but the air purifier as well. Pre filters prevent your air purifier from clogging up and working harder, greatly diminishing its life span.
- OUR CARBON PRE-FILTERS ARE THICKER AND CONTAIN MORE CARBON - More carbon elements in your pre-filter means they trap more odor and dust particles. Lab tested at 30 grams per sq ft carbon content and 45 grams per sq ft total filter weight.
- A PERFECT FIT, EVERY TIME - Seal Supply activated carbon pre-filters are machine cut with precision for an exact fit every time. Our Honeywell HRF-K1 Carbon Pre Filter measures 20.5" x 5.75" x .2" (52.1cm x 14.6cm x 5mm)
- UNMATCHED PERFORMANCE - Just one square foot of our carbon pre filters contain the carbon molecular surface area of 36,910 square yards. Equivalent to 24 football fields!
- U.S. QUALITY YOU CAN TRUST - Seal Supply pre filters are designed, manufactured & distributed exclusively in the United States.

## Images

![4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320 - Image 1](https://m.media-amazon.com/images/I/715XymA2EeL.jpg)
![4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320 - Image 2](https://m.media-amazon.com/images/I/910p14ndvaL.jpg)
![4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320 - Image 3](https://m.media-amazon.com/images/I/91uryNC3FXL.jpg)
![4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320 - Image 4](https://m.media-amazon.com/images/I/81Vgp+NY0kL.jpg)
![4 Pack of HRF-K1 Carbon Activated Pre Filters Precut Compatible with Honeywell Air Purifier Models: HFD-120-Q, HFD-300, HFD-310 & HFD-320 - Image 5](https://m.media-amazon.com/images/I/81rrKXYhn5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Better than the expensive name brand filters! Super fast shipping!
  

*by D***E on Reviewed in the United States on June 30, 2018*

Seriously fast shipping and perfect quality. I never understood why the replacement filters from the name brand cost so much. It is almost enough of a hassle to dissuade one from purchasing an air purifier, knowing the maintenance cost, long-term. This company rocks! Now, I don’t feel guilty throwing away used filters, as I would usually vacuum them a few (let’s be real, several) times before installing a new filter, because I couldn’t justify throwing it away as often as necessary due to the price. These are the same, if not better, quality as the filters that cost, what, 3x as much?  I am a very satisfied customer!

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Does not fit one of the models listed on the page
  

*by I***D on Reviewed in the United States on April 27, 2020*

They do not fit the HFD-120-Q.  They will need to be trimmed.  I didn't want to trim, I wanted a machine cut fit so dust didn't get past the pre-filter.  I can't trim perfectly, I know this.  It's a lot of filter for the price and came very quickly.  Seems high quality compared to OEM.  Still, the sale page says that it FITS!!!

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    You have to cut them to fit
  

*by S***N on Reviewed in the United States on December 23, 2018*

If they work although you have to cut them just perfect to fit the machine

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**Shop now:** [https://www.desertcart.hu/products/60534426-4-pack-of-hrf-k1-carbon-activated-pre-filters-precut](https://www.desertcart.hu/products/60534426-4-pack-of-hrf-k1-carbon-activated-pre-filters-precut)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-13*