30″ manway lid for round manway 29 7/8″ lid. Secure your storage tanks effectively with the 106-30 30″ Manway Lid by Pemco. This lid is specifically designed to fit round manways, with a precise diameter of 29 7/8 inches for a perfect fit. The 30-inch size ensures it covers a wide opening, providing easy access when needed while maintaining a secure seal to protect the tank’s contents from external elements and contamination. Ideal for a variety of industrial applications, especially in storage and containment systems, this manway lid is essential for safe and efficient tank management. Available at J&N Supply Co in the Dallas-Fort Worth metroplex, the 106-30 Manway Lid is a crucial component for maintaining the integrity and security of your storage tanks.