The Aputure Barndoors for LS 300d II and 120d II LED is a 4-way light modifier designed to fit select Bowen S mounted fixtures. Each of the four leaves can be swung to block certain areas of light if needed. As of our current inventory, this barndoor is only compatible with the Aputure LS C300d II LED – V-Mount and Aputure LS C300d II LED – Gold Mount kits.