The MSA Front Housing, with integrated dust filter (Charcoal) for ALTAIR 4X, is a durable replacement front casing that helps protect the internal components of your multi-gas detector from dust and particulate ingress. The charcoal material gives it a clean, professional look, and the built-in filter ensures proper airflow while shielding delicate sensor components. It’s easy to install and designed to maintain detector performance in demanding environments.