Arlington CS14 Cable Spacer with Nail-by-Arlington Arlington CS14 Cable Spacer with Nail.The SPACER?, Arlington's new, non-metallic Cable Spacer holds power or low voltage cable secure and centered on a 2x4. Perfect for routing, fastening and positioning power or datacom cable, it holds a single or double row of up to eight cables securely between the forks. Installation is quick and easy. Just nail or screw The SPACER to a wood or metal stud. Centers cable on a 2x4 stud.