Yes, Z-Vent is the only Brand of AL294c pipe that is cutable. You can use a hacksaw with a carbon steel blade to cut thru the non-gasketed end of the pipe.
* Do not a vice to secure the pipe, another person holding as you cut is the safest way.
*Always wear protective gloves and glasses when cutting the pipe.
* A metal file may be required to file any burs before inserting into the gasketed end.