The Lowel 2 Leaf Barn Door Set for the Pro and i-Lights consists of a barn door frame with two removable, non-expandable clip-on Leaves (iP-24). The frame accepts swing-in accessories and additional leaves, and rotates 360°. Barn doors narrow the beam spread of a light fixture. They help create a 3-dimensional look to a lighting scheme by placing light in a specific area, or by keeping it away. The more leaves a barn door set has, or the longer the leaves the more precisely the beam can be controlled.