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

The Superior Rigid Vertical Firestops for 4.5x7.5-Inch SecureVent Direct Vent System, 10-Pack offers superior fire safety protection. With a UL classified rating up to 4 hours, this 10-pack meets the highest standards for fire separation with its non-combustible, heat and smoke resistant silicone design. Keep your property safe and secure with the maximum fire resistance of the SV4.5VF.