If you want a reliable fireplace system, make sure it is vented properly to reduce the risk of damage from fire, heat, and smoke. Install the SecureVent 48 Inch Rigid DV Vent SV4-5L48 for enduring quality that does the job. This vent is built of durable galvanized steel on the outside with an aluminized inner wall, and it has a floating inner pipe for additional safety. It is also designed to have a tight seal with its secure twist lock connection. The 48 inch pipe has an inner diameter of 4 1/2 inches and an outer diameter of 7 1/2 inches. Includes a limited lifetime warranty.

Features: 

• Aluminized inner wall with galvanized steel outer wall
• Secure twist lock connections
• 4 1/2 inch inner diameter and 7 1/2 inch outer diameter
• "Floating" inner pipe for safety
• 48 inch length
• Limited Lifetime Warranty