Introduction
This manual provides essential information for the proper use and maintenance of your BLUEAIR Blue Pure 411 Auto Pre-Filter. This genuine replacement pre-filter is designed to extend the life of your primary filter by capturing larger airborne particles, ensuring a cleaner indoor environment. Crafted from a washable fabric, it offers both functionality and aesthetic customization.

Figure 1: BLUEAIR Blue Pure 411 Auto Pre-Filter in Aurora Light (Green) packaging.
Key Features
- Compatibility: Specifically designed for Blue Pure 411 Auto air purifiers.
- Filter Life Extension: Catches large particles such as dust, lint, pollen, and pet hair, prolonging the life of the main filter.
- Optimal Performance: Engineered to enable optimal airflow and performance, contributing to faster and quieter cleaning when combined with electrostatic filtration.
- Easy Cleaning: The fabric pre-filter can be vacuumed for visible dust and dirt, or machine washed for a deeper clean.
- Reusable Design: Durable and designed for repeated use after washing.
- Integrated Cord Compartment: Features a hidden compartment to conceal the air purifier's power cord.
- Customizable Aesthetics: Available in various Scandinavian-inspired colors to match personal style and home decor.
Product Overview
The Blue Pure 411 Auto Pre-Filter is an integral part of maintaining clean indoor air. It acts as the first line of defense against larger airborne contaminants.

Figure 2: The Blue Pure 411 Auto Air Purifier with the Aurora Light pre-filter integrated into a living space.

Figure 3: Illustration of the pre-filter's function in trapping common airborne particles.
Official Product Video
Video 1: A brief overview of the Blueair Blue Pure 411 Auto Pre-filter, demonstrating its features and benefits.
Compatibility
This pre-filter is specifically designed for the Blue Pure 411 Auto model. Ensure your air purifier matches the compatible model for optimal fit and performance.

Figure 4: Visual guide for identifying the correct pre-filter based on your Blueair air purifier model.
Setup
To install the pre-filter on your Blue Pure 411 Auto air purifier:
- Ensure the air purifier is turned off and unplugged from the power outlet.
- Gently remove the top section of the air purifier by pressing the release buttons (if applicable) and lifting.
- Carefully slide out the main filter unit.
- Unzip or unfasten the existing pre-filter from the main filter unit.
- Slide the new fabric pre-filter over the main filter unit, ensuring it fits snugly and covers the entire surface.
- Secure the pre-filter using the zipper or fasteners.
- Reinsert the main filter unit into the air purifier.
- Place the top section back onto the air purifier until it clicks into place.
- Plug in the air purifier and turn it on.
Replacement Filter Installation Video
Video 2: Step-by-step guide on how to replace the pre-filter on a Blueair 411/411+ Auto Air Purifier.
Operating
The pre-filter operates passively as part of your Blue Pure 411 Auto air purifier. Once installed, it continuously captures larger particles from the air as it passes through the unit. No specific operational steps are required for the pre-filter itself beyond proper installation.
Maintenance
Regular cleaning of the pre-filter is crucial for maintaining optimal air purifier performance and extending the life of the main filter.
Cleaning Instructions:
- Regular Vacuuming: Vacuum the exterior of the fabric pre-filter as often as needed to remove visible dust and dirt. This frequency may vary based on indoor air conditions and pet presence.
- Machine Washing: For a deeper clean, the pre-filter can be machine washed. Remove the pre-filter from the air purifier and wash it on a gentle, low-temperature cycle.
- Drying: After washing, hang the pre-filter to air dry completely before reattaching it to the air purifier. Do not tumble dry.

Figure 5: The reusable design of the pre-filter allows for easy cleaning by vacuuming or machine washing.
Customization
The fabric pre-filter is available in various colors, allowing you to customize the appearance of your air purifier to match your home decor.

Figure 6: Explore different pre-filter colors to personalize your air purifier.

Figure 7: The Aurora Green pre-filter, inspired by Scandinavian landscapes.
Troubleshooting
If your air purifier's performance seems diminished after installing a new pre-filter, ensure the pre-filter is correctly installed and not obstructing any air intake vents. If the issue persists, consult your main air purifier's instruction manual or contact Blueair customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | BLUEAIR |
| Model | Blue Pure 411 Auto |
| Material | Fabric |
| Item Weight | 2.39 ounces |
| Product Dimensions | 11.6 x 0.08 x 12.8 inches |
| Item Model Number | ABLA411AUTOCLOTHAL |
| Manufacturer Part Number | 105728 |
| Reusability | Yes |
Warranty & Support
Specific warranty and support information for this pre-filter is typically provided with the main Blueair air purifier unit or can be found on the official Blueair website. Please refer to your air purifier's documentation for detailed warranty terms and customer support contacts.





