This product exceeds standard shipping dimensions/weight, as such it does not qualify for free shipping. We will contact you with your shipping costs.This product is a special order item which can’t be returned or cancelled.
Ideal for sensing differential pressure in the inlet section of variable air volume terminal units and fan terminal units. Units can also be used to sense differential pressure at other locations in the main or branch duct systems. The "H" port senses total pressure and the "L" port senses static pressure.