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Search - positive pressure switch

Duct pressure switch for HVAC systems, automates fan control based on blower activation. Reliable, USA-made.

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Tjernlund PS1503P Plug-in Air Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems
Tjernlund PS1503P Plug-in Air Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems

Tjernlund PS1503P Plug-in Air Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems

HSM16307
The Tjernlund Duct Airstat senses positive pressure in a forced air heating and/or cooling system. T..
US$30.34
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