Air Products and Controls 2 1/2 foot sampling tube for SL-2000 Ionization Duct Smoke Detector.
System Sensor ST-3 - Innovair Metal Sampling Tube SKU: ST-3 Price: $11.29
Air Products and Controls Ionization Smoke Detector SL-2000-N SKU: SL-2000-N Price: $110.36
Honeywell V4044A1191 - Motorized Zone Valve, 120V 3/4" Sweat Connection Line Voltage 7 Cv capacity SKU: V4044A1191 Price: $85.66
Belimo NF120 US Direct Mount Damper Actuator SKU: NF120 US Price: $153.46
Honeywell L8124E1016 Triple Aquastat Boiler Control SKU: L8124E1016 Price: $179.27