Aputure Barndoors, Grid, and Gel Holder for LS 120d/II and LS 300d/II LED LightsDesigned specifically for Aputure COB lights, the Aputure Barn Doors are the optimal solution for shaping your light and preventing excess spill, featuring four velvet leaves, a newly designed negative reflector dish, and a high quality gel holder. Aircraft Aluminum Build Quality The four leaves of the Barn doors are made of smooth finish aircraft grade aluminum to ensure a strong, sleek build that is lightweight and easy to manipulate, while