Converts 3 or 4 lamp F40T12 recessed 2X4 fixture to 2-F32T8 system. •U.L. Classified. •Fits the majority of existing recessed 2X4 fixtures. •Kit includes brackets, tek screws, lampholders. •91% diffuse reflectivity for smooth light distribution with acrylic lensed fixtures. No gray lines as with some specular reflectors. •Width = 21.25', Depth = 2.44', Length with brackets = 48' •Typically used to convert 4F40T12 magnetic to 2-F32T8 electronic •1 year warranty.