*The Z-Vent 90 degree and 45 degree elbows are all non-adjustable,rigid elbows.
* Inner Gasket on the female end, non-gasketed male
* In many cases, a 90 degree elbow will have the value of 5 feet against your maximim length of pipe run.Also, some appliance manufacturers limit the number of elbows that can be used. Check your manufacturers installation manual for their venting requirements.