Amerimax Flex-Drain Coupler is designed to connect two cut parts of Flex-Drain seamlessly. It attaches easily to the cut end or the male side of Flex-Drain, allowing it to fit into standard 4-inch fittings. This coupler measures 4 inches wide by 3 inches long, making it a accessory for your drainage system needs. Its compatibility with standard 4-inch fittings ensures a secure and reliable connection for your Flex-Drain setup. Model Number: 55020