• Gas Appliance 4 In. Wall Thimble
• Mfr. item number - 4GVWT
• For 4 in. dia. vent pipe
• Adjusts from 3-1/2 in. to 6 in.
• Use for through-the-wall system to provide clearances for vent from combustibles
• For venting natural gas or liquid propane Cat. 1, draft hood appliances
• For units specifically tested & listed to use Type B Gas Vent
• Examples of appliances - furnaces, water heaters, boilers, room heaters & decorative gas heaters
• Aluminum inner wall, galvanized outer wall
• 1 in. clearance to combustibles
• Made in the USA
• Weight: Approximately 1 pounds
• Shipping Dimensions: Approximately 9 x 9 x 5 inches.