This Aluminum Wall Thimble with 4 Inch Inner Diameter from the Round Gas Vent series is a Type B gas component and consists of the duralock system for a tight seal. Use for through-the-wall system to provide clearances for vent from combustibles. Adjusts from 3½" to 6" to accommodate various wall thicknesses. Larger diameter wall thimbles are field fabricated. (See local codes for guidelines.).
Features: Fuel Type: Gas, Liquid Propane Inner Diameter: 4" Width: 8.5" Adjusts From: 3.5" to 6" Double Wall Construction UL Listed
Warning: this product contains a chemical known to the State of California to cause cancer. P65Warnings.ca.gov
1.47 Pounds (lbs)
12.5 Inches (In)
17.25 Inches (In)
Country of Origin
11.625 Inches (In)
Aluminum inner, Galvanized outer
For Use With
Wall Thimble used for through the wall systems to provide clearances for vent from combustibles adjusts for 3.5 to 6 to accommodate various wall thicknesses.