• Gas Appliance 3 In. Firestop Spacer
• Mfr. item number - 3GVFS
• For 3 in. diameter gas appliance vent pipes
• Use at every ceiling level where Square Firestop Support is not used
• 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 8 x 8 x 2 inches.