This is for vertical installation of the Eccotemp 40HI (indoor models). You will need to purchase additional Z-Vent straight pipe. You will need to determine how many additional feet you will need as well determine if you will need a condensation drain. Also remember there is a maximum vent run of 20 feet, subtracting 4 feet for every 90 degree elbow in the run.
1 x 3 Rain cap
1 x 3 Top support/Storm collar
1 x 3 Adjustable roof flashing (specify either normal or steep flashing)
1 x 3 Condensation Drip Pipe
1 x 3 Universal appliance adaptor
1 x 3 Back flow preventor
Z-Vent special gas vent kits are all made of AL-294C stainless steel and are category II/III and UL compliant.