Truss T-Hanger 1/2″ W/NPT Pipe

3-in-1 Galv Base Roof Flashing
Electrical Mast Connection 0-5
Flange 2inch Pipe Size Floor Flange
https://nsiindustries.com/product/flange-2inch-pipe-size-floor-flange/
1-1/4 Galvanized Floor Flange
3-in-1 Galv Base Roof Flashing