Zip’s Standard Pylon For Miller Industries Side Pullers, Includes Two (2) Rear Facing 4.5″ x 6″ Oval Openings, and Two (2) One Each Side – 2.5″ Outward Facing Openings, Away From The Side Of The Truck on The Left And Right Side. Measures 4.5 x 6 and has stop-tail-turn and marker light holes. Does Not Include LightsFits on SP8000H, SP12000H and SP20000H Light PylonsInstallation May Require Cutting and Welding