Our 18" x 24" hanging yard sign panels are screen-printed double-sided on .150" solid polyethylene. This is the panel material other sign companies charge extra for! The panels are treated with a matte finish for enhanced appearance and to reduce scratching. Two top holes may be drilled to your specifications at no extra charge. Additional drilling available for a fee of $.50 per hole. These panels also fit our R1824 frames (as well as many other frames), which may be ordered separately.