3-inch aperture; Extruded aluminum housing up to 90 percent recycled material; Extruded aluminum secured door frame with center pin Torx fasteners; Individual luminaires 2ft, 3ft, and 4ft. Continuous row lengths using combinations of these sizes; Multiple standard outputs from 375 up to 1250 lm/ft; Up to 100 lm/W; 1 percent 0-10v Dimming is standard; Lux Enabled with integrated wireless controls; L80 calculated at 80,000 hours; 5 Year limited warranty