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Key Features
- Metal sampling tube for duct widths 2'-4'
- Air inlet holes face into airflow
- Separate purchase for ducts >18 inches
Key Features
- Metal sampling tube for duct widths 2'-4'
- Air inlet holes face into airflow
- Separate purchase for ducts >18 inches
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Become an ADI CustomerKey Features
- Metal sampling tube for duct widths 2'-4'
- Air inlet holes face into airflow
- Separate purchase for ducts >18 inches

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Overview
Specifications
Documents
Product Overview
The sampling tube is identified by a series of air inlet holes on the tube. The sampling tube is always installed with the air inlet hole facing into the air flow. For duct widths greater than 18 inch, sampling tubes must be purchased separately. The recommended length is specified below. It is also recommended that the sampling tube length extend at least 2/3 across the duct width for optimal performance. Sampling tubes over 3ft long must be supported at the end opposite the duct smoke detector.
Main Features
- Metal sampling tube for duct widths 2'-4'
- Air inlet holes face into airflow
- Separate purchase for ducts >18 inches
- Recommended length extends 2/3 across duct
- Support required for tubes >3ft
- Support tubes over 3'at opposite end
General Information
Name: System Sensor ST-3 Metal Sampling Tube for Duct Widths 2'-4'
Category: System Sensor, Fire, Fire Detection Devices, Detector Parts & Accessories, ADI Pro Rewards
UPC Code: 999999382831
Country of Origin: Mexico. Country of origin is subject to change.
Specifications
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ADI Part Number BK-ST3 Brand Name System Sensor Manufacturer Honeywell International, Inc Manufacturer Part Number ST3 Product Line ST Product Model ST-3 Product Name ST-3 Sampling Tube Product Type Sampling Tube
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ADI Part Number Replaces FL-ST3 Model Number Replaces ST3
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Material Metal
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Limited Warranty 3-Year
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Country of Origin MX