The 58F 8X14X9 CEIL BOX with 4'' EXT from Southwark Metal Mfg Co is designed for efficient air distribution in ceiling applications. Measuring 8 inches by 14 inches with a 9-inch depth, this ceiling box is constructed from high-quality materials for durability and performance. The 4-inch extension allows for versatile installation options, making it suitable for various HVAC setups. This ceiling box meets industry standards, ensuring compatibility with existing systems and reliable operation in both residential and commercial environments.