Upgrade your safety gear with these Replacement Cartridges from Brown USA. Designed to fit BRR305 and BRR306 models, these cartridges offer top-notch filtration efficiency of 95%, perfect for filtering out dust, mist, metallic fumes, spray paint, chemicals, and small flying particles of low toxicity. Stay protected while you work on your projects, ensuring a clean and healthy environment for your DIY adventures or professional tasks.