SuperDuct 36-Inch Air Sampling Tube for Duct Smoke Detectors

The SD-T36 is a 36-inch rigid metal air sampling tube for Kidde SuperDuct duct smoke detectors. It draws air from the HVAC duct into the detector's sensing chamber, providing reliable smoke detection across standard commercial duct widths up to 36 inches.

Built for the commercial installer

Standard sampling tube spacing means the SD-T36 drops into any SuperDuct housing without modification - same hole pattern, same mounting. Compatible with both two-wire (SD-2W series) and four-wire (SD-4W series) SuperDuct conventional duct smoke detectors. The tube installs from either the duct side or the sensor compartment side of the housing, with or without the detector cover in place, and rotates in 45-degree increments for proper alignment with duct airflow.

Key features

• 36-inch reach covers standard commercial duct widths
• Front-side or back-side installation - no need to open the detector housing
• 45-degree rotation increments for proper alignment with duct airflow direction
• Standard spacing for drop-in migration from other duct detector sampling tubes
• Rigid metal construction for long-term durability in HVAC environments

Compatibility

Works with Kidde SuperDuct two-wire (SD-2W) and four-wire (SD-4W) conventional duct smoke detectors. For wider ducts, longer sampling tubes are available (SD-T42, SD-T60, SD-T78, SD-T120).