Align your filters with precision for your projectors.
Don't let heat ruin your filters.
For many applications, especially with newer video projectors radiant heat will destroy the polarized filters over time and can also melt most polarized filters. This device allows for a distance to be maintained between the filter and the projector. Place the polarized filters away from the projectors is such a way as to fill as much of the polarizer as is possible with the projected image. Be aware that new projectors or projector bulbs will generate more heat in the first hours of use.