Arlington 28" Gard-n-Post Power & Low Voltage Kit - Browngard n post. 28" ballard kit only for devices. opennings on both sides of post for back to back power or power on one side and low voltage on the other. metal support post attaches to surface. the non metallic gard n post slides over the support post. two 1 2" knockouts. color brown. color is permanent, no chipping. Package size: 1 Click here for spec sheet