Superior 24-inch Section Hi-Temp Double Wall Pipe Snap Lock 24-8HT24 inch Section Hi Temp Superior Double Wall Pipe Snap Lock 24 8HT Product Details This is Superior's 24 inch Hi Temp Double Wall Pipe Snap Lock, designated as 24 8HT. Ensure durable and efficient venting for your fireplace with this high temperature resistant component. Features: Type: Hi Temp Snap Lock Wall Pipe Comfort Glow, Comfort Flame, Desa, Design Dynamics, FMI, Vanguard, Vantage Hearth, Superior, IHP Each double wall chimney section consists