The ES8R program start is an ideal solution for relighting a parabolic installation when a one-for-one upgrade is desired. ES8R is designed for installation into host 2 x 4 ft. parabolic fixtures that are a minimum of 4-3/8 in. deep. ES8R is not specifically designed for lensed troffer upgrades or lensed troffer with parabolic renovator kit installations. Ideal for retail, educational,commercial and other general lighting applications. ES8R delivers more balanced light levels vertically and horizontally while eliminating the cave effect produced by traditional parabolic fixtures. ES8R provides substantial energy savings of up to 45 percent compared to a three-lamp T8 electronic ballast system and up to 56 percent savings compared to a three-lamp T12 ES magnetic system.