Goodman air pressure switch. -0.85 PF (-0.85" WC). Mounting bracket included. Used on the following units: GMPN080-4, 100-4, 120-5, GDT115-5, MNT060, GMNT100-4 & GDS81155CNA.Also known as part number B13701-50 & 9371VO-HS-0005
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