---
product_id: 71117345
title: "4-Pack Exact Fitment Pre-Filter Designed to Fit Honeywell Air Genius 3, 4, 5, 6 Purifier - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B"
brand: "corecarbon"
price: "521 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Core Carbon"
url: https://www.desertcart.dk/products/71117345-4-pack-exact-fitment-pre-filter-designed-to-fit-honeywell
store_origin: DK
region: Denmark
---

# High-grade powdered activated carbon Pre-cut size 5.75" x 20.625" Exact fitment, no gaps 4-Pack Exact Fitment Pre-Filter Designed to Fit Honeywell Air Genius 3, 4, 5, 6 Purifier - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B

**Brand:** corecarbon
**Price:** 521 kr
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate your air game with filters that fit like a glove—because your space deserves nothing less!

## Quick Answers

- **What is this?** 4-Pack Exact Fitment Pre-Filter Designed to Fit Honeywell Air Genius 3, 4, 5, 6 Purifier - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B by corecarbon
- **How much does it cost?** 521 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/71117345-4-pack-exact-fitment-pre-filter-designed-to-fit-honeywell)

## Best For

- corecarbon enthusiasts

## Why This Product

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

## Key Features

- • **Ready Out-of-the-Box:** Pre-cut filters require no scissors or modifications—snap in and breathe cleaner instantly.
- • **Value Meets Performance:** 4-pack at under $4 per filter delivers premium quality at less than half the OEM price—upgrade your air without the premium cost.
- • **Thicker & Heftier Than OEM:** 0.2" nominal thickness ensures longer-lasting filtration and enhanced durability compared to standard replacements.
- • **Activated Carbon Powerhouse:** Microporous powdered carbon offers adsorption surface area equivalent to 50+ tennis courts for superior VOC and odor removal.
- • **Precision Fit, Zero Compromise:** Engineered for Honeywell Air Genius 3-6 models with exact dimensions—no air bypass, no guesswork.

## Overview

CoreCarbon’s 4-pack pre-filters are precision-engineered replacements for Honeywell Air Genius 3-6 purifiers, featuring high-grade powdered activated carbon for rapid and effective VOC and odor adsorption. Pre-cut to exact dimensions (5.75" x 20.625"), these thicker-than-OEM filters ensure no air bypass and superior durability, all while offering exceptional value at less than half the cost of original replacements.

## Description

*****NOTICE ***** PRE-FILTERS ARE DESIGNED TO BE LARGER THAN AND PROPERLY COVER THE HEPA FILTER. NOT TO COVER THE HOUSING GRILL. NO AIR WILL BYPASS THE PRE-FILTER. REFERENCE IMAGE #2.CoreCarbon Prefilter Overview This high-quality replacement pre-filter is designed to exactly fit Honeywell* Air Genius 3, Honeywell* Air Genius 4, Honeywell* Air Genius 5, Honeywell* Air Genius 6 Air Purifiers - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B.Can be cut to fit but Not sized for the: Air Genius Compact Models: HFD280, HFD280BCan be cut to fit but Not sized for the: QuietClean Models: HFD070, HFD-120, HFD123, HD123, HFD-140, HFD140, HFD140BWM, HFD230Our finely ground, powdered, coconut shell, activated carbon media provides superior surface area for adsorption of VOC’s and other odorous gases (Minimum of 60% CTC). Powdered carbon provides faster adsorption than granular carbon and is cleaner to handle during replacement pad changes. Each microporous activated carbon replacement pad provides the adsorption surface area of over 50 tennis courts.Replaces: CoreCarbon pre-filters are replacements for the listed purifier models that require HRF-K2 (Labeled as “K”). Specifications: Pre-filter size: 5-3/4" x 20-5/8" Nominal thickness: .200” (thicker than OEM replacements) Material: High Grade Powdered Activated Carbon Quantity: 4 Pre-Filters – Exact Fitment*Registered mark of air purifier manufacturer. The products advertised on this page are manufactured by CoreCarbon.

Review: High Quality Filters - This is an updated review for CoreCarbon 4-Pack Exact Fitment, used with a Honeywell AirGenius 4 (HFD310). I have since changed my review from a 1-star to 5-stars. I purchased these filters back in mid March and I had an sizing issue where the filters were a bit shorter on the sides, and created a gap that was wide enough to affect the effectiveness of the filter. Seeing how they were not exact fitment, I returned them. About a week later, a representative from CoreCarbon reached out to me letting me know that dimensions for their filters would be updated and would be produced to be more accurate to specification. The representative sent replacement filters on the condition that I would test their filters. Again, I emphasize the high quality in their weight and thickness of the CoreCarbon filter media that seem much more heftier than the Honeywell OEM. The updated, resized to spec filters fit snugly on the rear panel leaving practically no gap. At about $3.90/filter, these CoreCarbon filters are a great value compared to OEM that are listed at about $9.25/filter. I will definitely be reordering these.
Review: Good product! - Just as described.

## Features

- *****NOTICE ***** PRE-FILTERS ARE DESIGNED TO BE LARGER THAN AND PROPERLY COVER THE HEPA FILTER. NOT TO COVER THE HOUSING GRILL. NO AIR WILL BYPASS THE PRE-FILTER. REFERENCE IMAGE #2
- DESIGNED TO FIT: Honeywell* Air Genius 3, 4, 5, 6 Air Purifier - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B
- NO SCISSORS REQUIRED: Pre-Cut for Exact Fitment 5-3/4" x 20-5/8"
- MADE IN USA: High Grade Powdered Activated Carbon for Superior Performance, Includes Resealable Bag To Maintain Carbon Freshness
- PERFORMACE: Proper balance of Air Flow and Performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CZ283NH |
| Air Filter Construction | Pad/Roll |
| Best Sellers Rank | #239,485 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,655 in Air Purifier Filters |
| Brand | CoreCarbon |
| Brand Name | CoreCarbon |
| Common Applications | Appliances |
| Compatible Air Purifier Models | Honeywell HFD300, Honeywell HFD310, Honeywell HFD320, Honeywell HFD323, Honeywell HFD360B |
| Compatible Devices | Air Purifier |
| Customer Reviews | 4.7 out of 5 stars 987 Reviews |
| Item Dimensions L x W x Thickness | 20"L x 5"W x 4"Th |
| Item Height | 10.16 centimeters |
| Item Weight | 0.11 Kilograms |
| Manufacturer | CoreCarbon |
| Material | High Grade Powdered Activated Carbon |
| Material Type | High Grade Powdered Activated Carbon |
| Model Number | HRF-K2 |
| Number of Items | 4 |
| Product Dimensions | 20"L x 5"W x 4"Th |
| Product Grade | new |
| UPC | 725084371210 |
| Unit Count | 4 Count |

## Product Details

- **Air Filter Construction:** Pad/Roll
- **Brand:** CoreCarbon
- **Compatible Devices:** Air Purifier
- **Item Weight:** 0.11 Kilograms
- **Manufacturer:** CoreCarbon
- **Material:** High Grade Powdered Activated Carbon
- **Number of Items:** 4
- **Product Dimensions:** 20"L x 5"W x 4"Th
- **Product Grade:** new
- **UPC:** 725084371210

## Images

![4-Pack Exact Fitment Pre-Filter Designed to Fit Honeywell Air Genius 3, 4, 5, 6 Purifier - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B - Image 1](https://m.media-amazon.com/images/I/51vVgaMDTpL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ High Quality Filters
*by C***V on March 22, 2019*

This is an updated review for CoreCarbon 4-Pack Exact Fitment, used with a Honeywell AirGenius 4 (HFD310). I have since changed my review from a 1-star to 5-stars. I purchased these filters back in mid March and I had an sizing issue where the filters were a bit shorter on the sides, and created a gap that was wide enough to affect the effectiveness of the filter. Seeing how they were not exact fitment, I returned them. About a week later, a representative from CoreCarbon reached out to me letting me know that dimensions for their filters would be updated and would be produced to be more accurate to specification. The representative sent replacement filters on the condition that I would test their filters. Again, I emphasize the high quality in their weight and thickness of the CoreCarbon filter media that seem much more heftier than the Honeywell OEM. The updated, resized to spec filters fit snugly on the rear panel leaving practically no gap. At about $3.90/filter, these CoreCarbon filters are a great value compared to OEM that are listed at about $9.25/filter. I will definitely be reordering these.

### ⭐⭐⭐⭐⭐ Good product!
*by R***. on October 17, 2025*

Just as described.

### ⭐⭐⭐⭐ Fits great but they don't appear to be working as well as others I've used in the past
*by K***A on December 15, 2019*

The filters fit perfectly, not sure how well they are working though...i have 2 of the same air purifiers and haven't noticed much of a difference this time around, it has been a few months. unfortunately I'm not seeing the effectiveness like i have with Previous filters that i have used,before they would instantly get rid of any odor and you could see the dust it collected right away. For some reason I'm not seeing that with these. I really wish i did tho since it's a slightly cheaper alternative to the original brand ones i recieved with my purifiers.

## Frequently Bought Together

- CoreCarbon 4-Pack Exact Fitment Pre-Filter Designed to Fit Honeywell Air Genius 3, 4, 5, 6 Purifier - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B
- Honeywell Air Genius 5 Air Purifier with Permanent, Washable Filter, for Large Rooms, Reduces Smoke, Wildfire Smoke, Dust, Pollen, Pet Dander and More, Black, HFD320
- 2 Packs H13 True HEPA Replacement Filter Compatible with Air Cleaner Purifier - Models HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B, Upgraded Version

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-11*