DuraVent DuraVent 5" x 8" DirectVent Pro Galvanized Ceiling Firestop

5" x 8" DirectVent Pro Galvanized Ceiling FirestopThe DirectVent Pro 5" x 8" 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: 5" x 8"Required for Multi-Story Vertical InstallationsDimensions: 12-1/2" x 10-1/2"DirectVent Pro features tight inner connections for superb performance, with no gaskets or sealants ...