The Profoto OCF II Gel (Half CTO) is designed to be used with the Profoto B10, B10 Plus, and the B1X.
This unit magnetically attaches to the Profoto OFC II Grid and Gel Holder, or the OCF II Barndoor.

The Profoto OCF II Gel (Half CTO) is normally used to convert daylight light to balance or match other fixtures or ambient light conditions. For selective lighting, this unit easily stacks with grids for selective lighting.