1. Rigid Outer Housing Shell
- Durable outer shell – provides structural integrity.
- Molded from high‑strength engineering plastics or metals.
- Withstands physical impacts and harsh outdoor environments.
2. Specialized Filtration Membrane
- ePTFE membrane – features microscopic pores for selective gas exchange.
- Permits continuous pressure equalization while blocking liquid water and dust.
- Core of the vent's internal filtration capability.
3. Precision Sealing Gasket
- Resilient elastomeric seal – high‑quality O‑ring or gasket.
- Compresses against mounting surface to prevent moisture bypass.
- Ensures watertight connection with inverter enclosure.
4. Secure Fastening Mechanism
- Integrated threading, snap‑fit clips, or welded flanges – ensures secure attachment.
- Remains locked in place under extreme wind loads and thermal cycling.
- Maintains protective function over long‑term operation.
