Godox BD-10 Barndoor Kit for AD300 Pro. A set of BD-10 modifiers for the AD300Pro lamp containing a barndoors, grid, color filters, diffuser. BD-10 The Barndoor Kit for AD300pro Flash provides what you need to light ѕelectively as well as encourage creative expression. The barndoors have a 4-way design. Simply swing one or more leaves into the AD300pro´s beam path to light the areas you want to have illuminated and keep light from areas you don´t. The set also includes color filters: red, yellow, blue, and green, as well as a diffuser.