Designed for the B10, B10 Plus, and B1X, the Profoto 20° 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 20° grid substantially narrows the light's beam spread. There is also a wider 30° grid and a narrower 10° grid.