EUROLITE Barndoors for THA-450F bk are separately sold metal barn doors designed for the THA-450F spotlight. The accessory is finished in black and features a 22 cm x 22 cm slot for the spotlight. Its mounting ring has an outside diameter of 214 mm and an inside diameter of 185 mm. The barndoors weigh 0.79 kg and are intended for mechanical beam shaping and spill-light control.