Upbox the Fnatr system

Fnatr 3D Printer Filtration System Review: Best Bambu Lab P2S Ventilation Solution?

Written by: MaFizzlee

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Published on

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Time to read 3 min

If you own a Bambu Lab P2S, you already know one big issue: Bambu Lab P2S ventilation was never designed for heavy-smell materials like ABS, ASA, or carbon fiber filaments. The stock setup only pulls air in and lets fumes escape through gaps, which is why so many users look for a exhaust fan kit or ventilation upgrade.
In this test, I’m putting the Fnatr 3D Printer Filtration System to the test to see if it can fix your Bambu Lab P2S ventilation problems and actually remove ABS/ASA smell. Here we also shot one unbox video for the you guys.

Table of contents
Why Bambu P2S Ventilation Needs an Upgrade Fnatr 3D Printer Filtration System Overview Price & Maintenance Key Features of Ventilation System Real-World Test: Does It Work for Bambu Lab P2S Ventilation? Pros & Cons for Bambu Lab P2S Ventilation Pros Cons Who Should Upgrade Bambu Lab P2S Ventilation with Fnatr? Final Verdict

Why Bambu P2S Ventilation Needs an Upgrade

The stock P2S ventilation only pulls air into the chamber without a controlled exhaust path. Fumes and VOCs escape through small openings around the printer, making it hard to use ABS, ASA, or similar filaments indoors.
A proper ventilation system needs to:

  • Capture ultrafine particles
  • Absorb VOCs and strong smells
  • Create negative pressure inside the enclosure
  • Work safely with heated chambers

That’s exactly what the Fnatr system aims to solve for your Bambu Lab P2S ventilation.

Fnatr 3D Printer Filtration System Overview

This filtration system is built to improve any Bambu Lab P2S ventilation setup with a triple‑layer filtration structure:

  • Pre-filter: Catches larger dust and particles
  • HEPA H13 filter: Captures ultrafine particles from PLA, PETG, ABS, nylon, and more
  • Activated carbon bed: Absorbs VOCs and chemical fumes like styrene

Out of the box, it includes adapters that work perfectly for Bambu Lab P2S ventilation improvements and it also have the version for P1S/X1C. 
If you print extra adapters for your Bambu Lab P2S ventilation setup, avoid PLA for heated chambers. Use PETG or higher-temperature material instead.

Price & Maintenance

  • Complete Fnatr system (with filters): $139.99
  • Replacement filter set: $69.99 for two Packs

For regular 8-hour daily printing, Fnatr recommends filter changes every 3 months. If you print lots of ABS/ASA and rely heavily , you may need to replace them a bit sooner.

Key Features of Ventilation System

The Fnatr system comes with everything you need to improve your Bambu Lab P2S ventilation:

  • Pre-installed 5-stage filter
  • Flexible tubing for better sealing
  • Sealing covers and mounting screws
  • Adjustable mode 
Flexible Tube

The adjustable fan speed is perfect for Bambu Lab P2S ventilation:

  • Lower speed for ABS/ASA: Maintains chamber temperature while creating negative pressure
  • Higher speed for PLA: Improves airflow and cooling
  • Max speed after printing: Fully refreshes the air inside the enclosure

This turns a weak stock setup into a clean, controlled Bambu Lab P2S ventilation system.

Real-World Test: Does It Work for Bambu Lab P2S Ventilation?

I used a strong-smelling filament to test how well this system improves the vent. Most air quality monitors can’t detect ultra‑small particles or VOCs properly, so I used a real‑world smell test.
During a 2.5-hour print:

  • Almost no smell reached the room
  • Faint odor only appeared near tiny, poorly sealed gaps on the printer—not from the Fnatr system
  • Family members could not smell anything until standing directly next to the printer
  • The chamber temperature dropped slightly (about 4°C), which can be adjusted by lowering fan speed 
  • Very quiet when the machine is working

After printing, running the fan at max for just a few minutes removed all remaining odors. The unit is also quieter than the printer itself, making it ideal for home use.

Operating at 39dB

Pros & Cons for Bambu Lab P2S Ventilation

  • Dramatically improves Bambu Lab P2S ventilation performance
  • Effectively reduces ABS/ASA smell and VOCs
  • HEPA H13 + activated carbon filtration
  • Adjustable airflow for different materials
  • Simple installation for Bambu Lab P2S ventilation upgrade
  • Affordable price and easy maintenance

Cons

  • Works best with improved printer sealing
  • Slight chamber temperature drop at higher fan speeds
  • Filter replacement is an ongoing cost

Who Should Upgrade Bambu Lab P2S Ventilation with Fnatr?

This system is perfect if you:

  • Want a real Bambu Lab P2S ventilation fix
  • Print ABS, ASA, or carbon fiber indoors
  • Don’t have access to a window or wall vent
  • Want cleaner, safer air while 3D printing

If you’ve been frustrated with stock Bambu Lab P2S ventilation, the Fnatr  is one of the most practical upgrades available.

Final Verdict

The Fnatr 3D Printer Filtration System delivers a reliable, effective Bambu Lab P2S ventilation solution. It drastically reduces fumes, absorbs strong smells, and turns your P2S into a machine you can safely use indoors.
If you need real Bambu Lab P2S ventilation that actually works, this is an excellent choice.
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