---
product_id: 315136128
title: "Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal"
brand: "alen"
price: "₨1448"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/315136128-alen-breathesmart-45i-flex-h13-true-hepa-replacement-filter-medical
store_origin: LK
region: Sri Lanka
---

# 9-12 months lifespan 700-800 sq ft coverage 99.9% particle capture Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal

**Brand:** alen
**Price:** ₨1448
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe smarter, live better — don’t let allergens crash your vibe!

## Quick Answers

- **What is this?** Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal by alen
- **How much does it cost?** ₨1448 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/315136128-alen-breathesmart-45i-flex-h13-true-hepa-replacement-filter-medical)

## Best For

- alen enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Proof Foam Seal:** Maximizes airflow and traps stubborn allergens with zero air bypass
- • **Broad 800 SqFt Coverage:** Purifies large spaces efficiently, perfect for your home or office environment
- • **Easy Maintenance Design:** Vacuum-cleanable pre-filter extends filter life and saves you time and money
- • **Long-Lasting Filter Life:** Enjoy up to 12 months of hassle-free air purification without frequent replacements
- • **Medical-Grade H13 True HEPA:** Captures 99.9% of airborne particles down to 0.1 microns for pristine air quality

## Overview

The Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter is a medical-grade air purifier filter designed to capture 99.9% of airborne particles as small as 0.1 microns. Covering up to 800 square feet, it ensures clean air in large spaces with a durable 9-12 month lifespan. Featuring a vacuum-cleanable pre-filter and a leak-proof foam seal, it offers efficient, low-maintenance performance to keep your indoor environment fresh and healthy.

## Description

Alen's standard medical-grade H13 True HEPA filter provides outstanding wellness-boosting protection. It captures 99.99% of dust, allergens, and harmful fine pollutants as small as 0.1 microns. The air filter replacement lets you enjoy 800 sq ft of clean and healthy air every 30 minutes, and you need a replacement air filter for air purifier to enjoy a continuous supply of clean air. Using the right air filter also extends the life of True HEPA air purifier. The air purifier has a filter indicator light that tells you when a replacement air filter is required. After replacing the filter, reset the indicator light on the air purifier. Hold down the button until the light turns green.

## Features

- HEPA AIR FILTER: Breathe cleaner air with the Alen Air Purifier's high-quality HEPA filter. This advanced filter captures allergens, dust, mold, and germs, promoting a healthier and safer environment for you and your loved ones.
- MEDICAL-GRADE H13 TRUE HEPA FILTER: Discover the exceptional power of our medical-grade H13 True HEPA filter within your home. Our filter captures 99.9% of airborne particles as small as 0.1 micron, this technology provides clean and fresh air throughout your space. Take control of your indoor air quality and create a safe haven for your family.
- HASSLE-FREE MAINTENANCE: Convenience made simple. Our Air Filter Replacements feature an easily removable pre-filter screen. Effortlessly clean your replacement filter using a vacuum ensuring optimal performance and extending its lifespan. Save time and effort while enjoying consistent air purification in your home.
- EXTRA LONG LASTING: Say goodbye to frequent filter replacements. Our filter has a 9 to 12 months lifespan. Enjoy continuous and hassle-free air purification without the worry of constantly replacing filters.
- EFFICIENT FILTER PERFORMANCE: Experience efficient performance with our Alen Air Purifier Filters. The unique design of our H13 True HEPA Medical-Grade Filters includes foam on the outside of the frame, which ensures exceptional effectiveness without any air leaks. Maximize airflow while capturing even the most stubborn particles, achieving a thorough and comprehensive clean.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 5.08 x 27.94 x 38.1 cm; 453.59 g |
| Item Weight | 454 g |
| Care instructions | Vacuum Pre-Filter |
| Specification met | CARB Certified |
| Is assembly required | No |
| Number of pieces | 1 |
| Batteries required | No |
| Included components | One Filter |

## Product Details

- **Brand:** Alen
- **Material:** Allergies/Dust
- **MERV rating:** 17
- **Compatible devices:** Air Purifier
- **Item weight:** 1 Pounds

## Images

![Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal - Image 1](https://m.media-amazon.com/images/I/81RlIW8lntS.jpg)
![Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal - Image 2](https://m.media-amazon.com/images/I/71ODeVxhbYL.jpg)
![Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal - Image 3](https://m.media-amazon.com/images/I/71yIfACmoiL.jpg)
![Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal - Image 4](https://m.media-amazon.com/images/I/81OADg1PcpL.jpg)
![Alen BreatheSmart 45i/FLEX H13 True HEPA Replacement Filter - Medical-Grade Air Filter- Captures Allergens, Dust, Mold, and Germs, 700-800 SqFt Coverage - 99.9% Airborne Particle Removal - Image 5](https://m.media-amazon.com/images/I/61vJ5-ddq6L.jpg)

## Questions & Answers

**Q: What are the dimensions of this filter?**
A: The FL40 Silver-Carbon filter is 11 inches by 14 inches

**Q: Why would my unit indicate a need to change filter after less than a month of use?**
A: Each time you put in a new filter you'll need to press and hold the filter button on the control panel for 10 seconds to reset the red iight back to green. So, you my just need to reset that filter light.

**Q: Does the replacement filter come with a new pre-filter?**
A: Te filter has a thin layer on top of the main filter that you can remove and vacuum other for longer use I have two Shizu pups and
I am amazed at the things the filter catches that you can’t see with naked eyes I have one in my den and another in my bedroom We
Love ours

**Q: My replacement filter arrived without the black pre-filter. Am I supposed to keep and clean the original pre-filter and re-apply it to the new filter?**
A: Not sure what you are "supposed" to do, but since I don't throw away much I would have kept the pre-filter. Now I just thoroughly rinse my pre-filters and vacuum the filter until it is just too dirty to continue with it.

## Frequently Bought Together

- Alen Air Filter B4-Pure Replacement H13 True HEPA Filter for BreatheSmart 45i & Flex Air Purifier - Captures Allergens, Dust, & Mold (1 Filter)
- Alen Air Filter BF35-Fresh Replacement HEPA Filter for BreatheSmart Classic Air Purifier - Captures Allergens, Dust, & Mold + Odors & Smoke (1 Filter)
- Alen Air Filter B7-Pure Replacement H13 True HEPA FIlter for BreatheSmart 75i Air Purifier - Captures Allergens, Dust, & Mold (1 Filter)

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**Shop now:** [https://www.desertcart.lk/products/315136128-alen-breathesmart-45i-flex-h13-true-hepa-replacement-filter-medical](https://www.desertcart.lk/products/315136128-alen-breathesmart-45i-flex-h13-true-hepa-replacement-filter-medical)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-04*