3" or 4" Stainless Steel Wall Thimbles

Features

• 10" x 10", Width Adjusts From 4" to 7"
• Simple Gasketed Connection- No Sealant Needed
• Features the Highest Pressure Rating in the Industry
• The Only Metallic Special Gas Vent you can Cut to Length On Site
• New Fusion Welded Pipe Seams for a Smoother Finish and Better Fit
• Compatible with all Types of Z-Flex Z-Vent
• Made of AL-294C Stainless Steel