The Elinchrom Barndoor Set 21 is made for the standard 21 cm reflector and able to rotate at 360-degrees. Its a modifier that easily allows you to carefully select precisely where exactly you would like your light to fall onto, by moving any or all of the eaves in the path of the lights beams. Included in the set is a Light Shaper Carrier, two 26 x 16 cm leaves, as well as two 21 x 15 cm leaves.