DuraVent DuraVent 4" Inner Diameter DirectVent Pro Direct Vent Pipe - Galvanized Ceiling Firestop

4" Inner Diameter DirectVent Pro Galvanized Ceiling FirestopThe DirectVent Pro 4" Inner Diameter Galvanized Ceiling Firestop is a component that is used in a typical venting installation. A ceiling fire stop is required for multi-story vertical installations at the second floor and any subsequent floors.Features: Inner Diameter: 4"Outside Diameter: 6 5/8"Required for Multi-Story Vertical InstallationsDimensions: 11" x 9"DirectVent Pro features tight inner connections for superb performance, with no gaske...