Comments about Lowel Lowel Tota-Shade, Four Leaf Barndoor for the Tota and V-Lights.:
Two of these attach with clips onto the existing small barndoors of the Tota light. As such they provide significant additional light control and work very well. Adding the other two is kind of a dicey proposition as they connect via the first two, and that interconnect is a little "flimsy" and so it can be a little frustrating to use them, but it is certainly doable. I rarely find the need to control light out of the axis that the 3rd and 4th barndoor control, so hardly ever use them. When I do need light control where I might be tempted to use them, a flag is easier.
Overall though, a very handy accessory for a tota light. If I had two tota lights I would only buy one 4 door set and use them in 2's on each of my lights. With the money you save buy a flag and flex shaft.
Comments about Lowel Lowel Tota-Shade, Four Leaf Barndoor for the Tota and V-Lights.:
These don't attach all that securely. When you adjust them you will find yourself futzing with them to keep everything together - but then for the price, they at least get the job done.