This Aluminum Firestop Spacer with 3 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 at every ceiling level where Square Firestop Support is not used.Double wall construction UL ListedADA Compliant: No Collection: Round Gas Vent Fuel Type: Natural Gas, Liquid Propane Inner Diameter: 3 Length: 5-3 4 Material: Aluminum Pipe Class: Type B Pipe Shape: Square Style: Contemporary Modern Weight: 7
