The barndoor to help even out background light and make the pictures easier to fix * It makes the photo vibrant and sharp, and later on saves a lot of time on photo editing, and offers * the highest quality of light absorbing function. * Dimension:1"x 11.75"X 1.5" (30.4cmx 29.8cmx 3.8cm) 2.Weight * 2 lbs＊Compactable with 2035 Halogen Light