System Sensor Dst1.5 Sampling Tube,Length 18 In

System Sensor DST1.5 Metal Sampling Tube for DNRE and D2E, Duct Widths 1' to 2'

System Sensor DST1.5 Metal Sampling Tube for D4120 Duct Smoke Detectors - 1-foot

System Sensor Dst1.5 Sampling Tube, Length 18 In

2 Pack System Sensor 1.5'L Metal Duct Sampling Tubes W/ Holes DST1.5

System Sensor Dst1.5 Sampling Tube,Length 18 In

10 Pack System Sensor Dst1.5 Sampling Tube Length 18 In

System Sensor DST1.5 Metal Duct Sampling Tube 1–2 Ft for D4120 9C349A