The 2SVWT06 Z-Vent Wall Thimble (4-7 inch adjustable range) is an essential component for venting systems, designed to ensure safe and efficient passage of 6-inch diameter vent pipes through combustible walls. This versatile thimble fits wall thicknesses from 4 to 7 inches and is compatible with 6-inch Single Wall vent pipes. Constructed from durable Category III stainless steel, it is UL 1738 rated, ensuring high safety standards and longevity. The thimble features gasketed connections and fusion-welded seams for an airtight seal, eliminating the need for additional sealant and reducing installation time. Ideal for horizontal venting applications in appliances such as tankless water heaters and boilers, it maintains proper clearance from combustible materials, enhancing both safety and efficiency in residential and commercial installations.