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The Hart & Cooley 6RWT is an adjustable wall thimble designed for use with Type B gas vent systems. Made of G-90 galvanized steel, it features an outer diameter of eight and one-half inches and a width of three and one-fourth inches. The wall thimble allows for necessary clearance to combustibles and can be adjusted between three and six inches to fit various installation needs.
This wall thimble provides important safety features by maintaining clearance from combustibles while ensuring optimal performance in venting systems.
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