Pure apertured design with fully luminous interior without horizontal lenses or difusers. Precision machined clear anodized, extruded aluminum. Arch, Oblique, Shade or Slant endcaps preinstalled for perfect fit and finish. 10′ – 15′ o.c. spacing with 0.45 to 0.75 W/ft.sq. for general area lighting. Multiple direct/indirect lighting distributions, available with independent Up | Dn lighting control.