LEE Filters is one of the most important manufacturer of camera and lighting filter in the world.
Their products are used in film, television, live entertainment and architectural applications.
Their succes is due to the continuos work of research and development that allows them to create new products with high quality for the film, television, theater, architectural lighting and still photography market.
To find the exact Lee filter code with competitor codes such as Apollo, Arri, Chris James, Cotech, Formatt, GAM, Rosco, SSTV, Strand:
https://leefilters.com/lighting/gel-comparator/