The Rosco Opti-Flecs 9306 1/4 Minus Green LED Filter is the most popular filter for reducing the green spike from LED lights. Many inexpensive LED lights emmit a large amount of green light energy. This filter will reduce the green cast to a minimum. A much needed filter for shooting portraits or photographing products when lighting with LED panels. Sheet size of 11.81" x 11.81" fits most 1x1 LED light fixtures including LitePanels 1x1 and LitePanels Astra. Filter can be cut and trimmed with matte knife or scissors for a pefect fit with other size lights. Great for color correcting architectural LED lights. The semi-rigid panel can be used without a color frame in most instances. Thickness: 10 - 13 mil. Designed for use with low heat LED lights only.