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The Hart & Cooley 4RN5 is a round vent increaser designed for gas vent systems. This fitting has a size range from four to five inches, featuring an aluminum inner and a galvanized G-90 steel outer layer. The outer diameter measures four and thirteen-sixteenths by five and a half inches, with a height of five and one-quarter inches. It is engineered to withstand temperatures up to five hundred fifty degrees Fahrenheit.
This vent increaser is suitable for various gas vent applications and includes a unique locking band that allows for a full three hundred sixty-degree turning radius. The design combines both inner and outer pipes into a single unit to enhance durability and ease of installation.
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