Extron Flex55 100 Mounting Kits are designed to mount onto Flex55 enclosures and EU junction boxes. Flex55 100 mounting kits include a trim frame and mounting bracket designed for a one-gang to four-gang Flex55 enclosure, and each opening holds one Flex55 or EU module. They are compatible with EU modules such as Extron DTP T EU 4K DTP transmitters and EBP eBUS EU button panels.