The black CBL-1 Barndoors for Compact Beamlight from BB&S have a 4-way design that allows selective shaping of the fixture's beam spread to light only areas of your subject you want to be illuminated. The barndoors mount onto the Beamlight with four strong earth magnets that prevent them from shaking loose.
BB&S Lighting BBS-2843 Specs
Proprietary Mount: For BB&S Lighting Compact Beamlight
Box Dimensions (LxWxH)
8.7 x 8.4 x 2.2"