---
product_id: 627791729
title: "45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 HEPA Filter with Activated Carbon Pre-Filter, B4-Pure, 1 Hepa Filter + 4 Carbon Filters"
brand: "isinlive"
price: "2272935₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/627791729-45i-replacement-filter-compatible-with-alen-breathesmart-flex-and-45i
store_origin: VN
region: Vietnam
---

# 99.97% HEPA filtration efficiency FSC-certified eco-friendly materials 3-in-1 multi-stage filter system 45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 HEPA Filter with Activated Carbon Pre-Filter, B4-Pure, 1 Hepa Filter + 4 Carbon Filters

**Brand:** isinlive
**Price:** 2272935₫
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe smarter, live fresher — your air’s new best friend!

## Quick Answers

- **What is this?** 45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 HEPA Filter with Activated Carbon Pre-Filter, B4-Pure, 1 Hepa Filter + 4 Carbon Filters by isinlive
- **How much does it cost?** 2272935₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/627791729-45i-replacement-filter-compatible-with-alen-breathesmart-flex-and-45i)

## Best For

- isinlive enthusiasts

## Why This Product

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

## Key Features

- • **Tailored Compatibility:** Specifically designed for Alen BreatheSmart Flex & 45i models, ensuring seamless fit and peak performance.
- • **Energy-Efficient Design:** Advanced low-density structure reduces energy consumption while maintaining powerful filtration.
- • **Odor & Allergen Defense:** Activated carbon filters neutralize cooking smells, wildfire smoke, and pet odors, creating a healthier home environment.
- • **Value-Packed Filter Set:** Includes 1 HEPA + 4 activated carbon filters for long-lasting freshness—replace every 6-8 months to stay ahead of indoor pollutants.
- • **Triple-Action Purification:** Fine nylon, HEPA, and activated carbon filters combine to eliminate pollen, pet dander, odors, and VOCs for fresher air.

## Overview

The 45i Replacement Filter by isinlive is a premium 3-in-1 HEPA and activated carbon filter set compatible with Alen BreatheSmart Flex and 45i air purifiers. Engineered to capture 99.97% of airborne particles including pollen, pet dander, and dust, while effectively neutralizing odors and VOCs. This eco-conscious filter pack includes one HEPA and four activated carbon filters, designed for energy-efficient operation and recommended replacement every 6-8 months to maintain optimal indoor air quality.

## Description

Full description not available

## Features

- 【COMPATIBLE MODELS】The premium 45i pure replacement filter is compatible with Alen BreatheSmart 45i and Flex Air Purifier. Compared to Part # B4-Pure. NOTE: This is not a OEM product. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility.
- 【3-IN-1 FILTRATION】 Our 45i replacement filter for Alen BreatheSmart Flex and 45i air purifier features 3-stage filtration system: ①Fine Nylon Preliminary Filter ②HEPA Filter ③Activated Carbon Filter. It's specifically customized for pet dander and cooking odor, lint, pollen, smokers, wildfire season, gases, etc.
- 【HIGH PERFORMANCE】These BreatheSmart Flex HEPA air filters for Alen BreatheSmart air purifier can attach 99.97% of pollen, pet dander, lint, dust, hair. And the activated carbon filter can attach most unpleasant odors such as pet odors, cooking, vocs, wildfire.
- 【PREMIUM QUALITY】Our BreatheSmart Flex and 45i air purifier replacement filter is adopt advanced lower energy consumption and lower density structure technology verified by the manufacturer, with higher efficiency and less pressure to ensure maximum performance.
- 【COST-EFFECTIVE 】- Package includes 1 x Hepa +4 X Actived Carbon BreathSmart Flex and 45i replacement filter. It is recommended to replace your 45i filter every 6-8 months for optimal performance (depending upon your usage and environment). Filter made of FSC-Certified paper
- 【MAINTENANCE TIP】After installing a new 45i replacement filter, press the FILTER button for 5 seconds to reset your air purifier. The indicator will switch from red to green. For any setup or usage issues, you can reach us for prompt support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand Name | isinlive |
| Model Info | B4-Pure FL40-Silver-Carbon |
| Item Weight | 2.07 pounds |
| Product Dimensions | 5 x 5 x 5 inches |
| Item model number | B4-Pure FL40-Silver-Carbon |
| Part Number | LYH0007-AHJ-1 |
| Color | 45I-1 |
| Compatible Device | Compatible with Alen BreatheSmart Flex and BreatheSmart 45i Air Purifier B4-Pure |
| Material Type | Activated Carbon |
| Included Components | 1 Hepa Filter, 4 Activated Carbon Filters |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** isinlive
- **Material:** Activated Carbon
- **Product Dimensions:** 14.5"L x 10.98"W x 2"Th
- **MERV Rating:** 13
- **Compatible Devices:** Compatible with Alen BreatheSmart Flex and BreatheSmart 45i Air Purifier B4-Pure
- **Item Weight:** 0.94 Kilograms
- **Air Filter Construction:** Pleated
- **Number of Items:** 5
- **Manufacturer:** isinlive
- **Product Grade:** new

## Images

![45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 HEPA Filter with Activated Carbon Pre-Filter, B4-Pure, 1 Hepa Filter + 4 Carbon Filters - Image 1](https://m.media-amazon.com/images/I/71EWkjd4rtL.jpg)

## Available Options

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

## Frequently Bought Together

- 45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 H13 Grade True HEPA High-Efficiency Activated Carbon Filter, B4-Pure, 1 True Hepa Plus 4 Carbon Filters
- Flintar True HEPA Replacement Filter, Made in TAIWAN, Compatible with Alen BreatheSmart Flex and 45i Air Purifier, H13 Grade True HEPA, Plus 3 Extra Pre-Filters, Part # B4-Fresh (1-Pack)
- Durabasics HEPA Filters Compatible with Alen T500-2 Pack Replacement Filter

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**Shop now:** [https://www.desertcart.vn/products/627791729-45i-replacement-filter-compatible-with-alen-breathesmart-flex-and-45i](https://www.desertcart.vn/products/627791729-45i-replacement-filter-compatible-with-alen-breathesmart-flex-and-45i)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-11*