DuraVent Type B Gas Vent Square Ceiling Firestop Spacer - For Vent Pipes with a 5" Diameter - 5GVFS: This unit necessitates a venting pipe with a 5" inner diameter. If you need to pass a vent through combustible material, make sure you use the DuraVent firestop spacer while installing your firestop. This spacer is designed to fit DuraVent Type B Gas Vent pipes with a 5" diameter and is backed by a 25-year warranty. When you utilize a DuraVent model for your venting needs, you will be thrilled and reassured that you used only the most durable and efficient option for your venting needs.

Wall firestop spacer for through-ceiling installations For use with Dura-Vent Type B Gas Vent pipes 25-year warranty For Dura-Vent Type B Vent Pipes with a 5" diameter Dimensions: 9 5/8" x 9 5/8"