Vent-Rite 57 Unit Heater Vent

Unit Heater Vent; Type Positive Action, Straight Line, Automatic; Inlet Size 3/4 Inch x 1/2 Inch; Inlet Connection Male Threaded x Female Threaded; Port Type Non-Adjustable; Body Material Nickel Plated Brass; Pressure Rating 20 PSI; Vent Port 1/32 Inch; Vent Height 4-5/8 Inch