Designed for the B10, B10 Plus, and B1X, the Profoto 30° OCF II Grid narrows the approximately 77° beam spread of the fixture for selective lighting. The grid attaches magnetically to the OCF II Barndoor or the OCF II Grid and Gel Holder and can easily be stacked with OCF II gels. This 30° grid is the widest that Profoto has to offer but still substantially narrower than the light's native beam spread. There are also 10 and 20° grids available.