Superior Rigid Horizontal Firestops for 4.5x7.5-Inch SecureVent Direct Vent System, 10-Pack

The Superior 10 Horizontal Firestop (Rigid) is a 10-pack of firestop designed to help contain the spread of fire and smoke in the event of a fire. This pack offers an STC of up to 4-1/2-hours when properly installed, protecting against the spread of fire and smoke.