The battery backup linear is an optimal replacement for 36W T8 fluorescent emergency fixtures. Offering a 1 for 2 replacement, the battery backup linear significantly reduces the amount of maintenance required to safely illuminate the work site. this fixture comes standard with top and/or side conduit entries to provide flexibility when installing and is IP66, NEMA 4X rated to withstand the elements in the most demanding environments. as its name indicates, this fixture provides up to 3 hours of illumination in battery mode to ensure maintained safety at the most critical time.