The 4 in. steel adjustable roof flashing is designed to be used where the vent passes through the roof. It is made of galvanized steel and UL listed for safety in accordance with nape standards.
- Round and oval gas vent pipe and fittings are used for residential, commercial, and industrial applications 
- Round vent pipe is a listed type "B" gas vent and it's adjustable fittings eliminate all cutting, fitting, and special engineering 
- An improved joint design provides for a rapid and secure connection in seconds, the use of our "lock tab" feature gives installers the option of engaging this tab instead of using sheet metal screws 
- Fully tested and listed per UL 441 
- Limited lifetime warranty 
- Outer material 28 gauge galvanized steel 
- Inner liner is aluminum 
- Check appliance installation instructions for details 
- Industry best warranty contact Selkirk for details