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WG stands for H2o Gauge. WG is an element of the measurement device for your stress of lover and pump. IN.WG which stands for inch h2o gauge would be the Imperial device for strain. One example is, ducts are Typically designed with 0.one in.wg of force loss per one hundred ft of duct size.HRV stands for Warmth Get better Ventilator. HRV is often a