Roxtec FlamePlus™ transit with extension is a sealing solution featuring a fire rated plastic frame with a wide flange suitable for exterior wall penetrations in insulated sandwich panels and concrete walls. The lightweight modular design, including a pre-installed knock-out plate, provides IP protection already when installed in the wall opening. Once cables are routed and sealing modules are fitted, it meets fire requirements. The modules adapt to cables and pipes of different sizes.