The Transition line of fluorescent fixtures by Columbia Lighting, a Hubbell brand, are designed for schools, medical facilities, and other public spaces. The fixtures have a completely recessed housing that can be mounted as low as 8', matte white reflectors, and a polyester coating. Three lamp sizes are available in five configurations, as is an optional clear acrylic dust guard that pivots to close off the lamp compartment. A debris shield keeps out contaminants, maintains fixture efficiency, and reduces fixture maintenance. Transition configurations achieve performance with efficiencies of 90% to 100%.