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The Hart & Cooley 4RWT is an adjustable wall thimble designed for use with Type B gas vent systems. This thimble features a diameter of six and one-half inches and is made from G-90 steel, ensuring durability and resistance to corrosion.
This adjustable wall thimble provides necessary clearance to combustibles, ensuring a safe installation. The unique locking band enables a full 360-degree turning radius for easy alignment during installation.
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