Features

• Deep Locking Groove assures solid joint and secure lock.
• Not suitable for use with wood-burning or coal applications
• Corrosion-resistant aluminum inner wall for rapid warm-up
• Galvanized steel outer pipe for maximum protection
• Use with natural gas or liquid propane
• Material: Sheet Metal
• Use: Ducting and Venting
• Type: Reducers and Increasers
• Style: Double Wall
• Size: 4 in. to 6 in.