Panduit SACS50-T100 Stackable Aerial Cable Spacers are designed to snap into another to increase spacer heights by ½” increments. Can be used in parallel or perpendicular applications. Are 2.08” x 1.16” x 0.51” (52.8 x 29.5 x 13.0 mm) in size and for use with Panduit Dura-Ty™ Cable Ties. Made of Weather Resistant Polypropylene and have high resistance to damage caused by UV light. For outdoor environments, are black in color and come in packages of 200.