Z-Vent is a factory built, engineered AL29-4C special gas vent pipe, suitable for positive or negative pressure. Z-Vent is UL tested and listed to UL1738/S636. CAT II, III, IV venting approved.
Flashing for use in flat roof or chimney application.
**NOTE: The use of an adjustable pipe may be required when the system must be located within extremely tight installation parameters.