These are the standard barn doors for the MiniCine Light. They are the most compact version, but do not close over the eggcrate. they will close over regular filters, and I think they look the coolest. They close completely flat and can be removed by loosening one screw. The amount of friction for rotation is adjusted with the same screw, which uses a captive locking nut, meaning it has a nylon insert so it won’t come loose. Similarly the barn door tension can also be adjusted and also uses locking nuts, but a wrench or pliers will be needed to make this adjustment as these nuts are not captive.