EUROLITE Barndoors Theatre 200 bk is a separately sold metal barndoor accessory for controlling and shaping the light beam of a compatible spotlight. It is made from 0.8 mm painted metal with a black powder-coated finish. The accessory has four 4.5 mm mounting holes and one 7 mm mounting hole, with four M4 mounting threads. Its ring measures 212 mm externally and 159 mm internally, and it weighs 0.67 kg.