The ABB Thomas & Betts 290GSA is a 3/4-inch stamped aluminum cover with a gasket, designed for enhanced sealing in electrical enclosures. This cover provides excellent protection against moisture and dust, ensuring the longevity of electrical components. Its lightweight construction does not compromise durability, making it suitable for various applications. The FM9 rating confirms its compliance with industry standards, making it ideal for both residential and commercial installations. Easy to install, this cover is a practical solution for maintaining electrical system integrity.