The Southwire KOS-150 is a 1-1/2" screw and bar knockout seal designed for electrical enclosures. Made from durable materials, this knockout seal provides a secure closure for knockout openings, ensuring compliance with safety standards. Its design prevents moisture and contaminants from entering the enclosure, making it suitable for various applications. The easy installation process allows for quick setup, making it a practical choice for electricians. This knockout seal is essential for maintaining the integrity of electrical systems in both residential and commercial settings.