DWV FLEX-TEND® Flexible Expansion Joint For Gravity Drain Pipelines
Source: EBAA Iron

For use with gravity drain pipelines, the DWV FLEX-TEND is a flexible expansion joint can be used in drain, waste, and vent non-pressurized piping.
For use with gravity drain pipelines, the DWV FLEX-TEND is a flexible expansion joint can be used in drain, waste, and vent non-pressurized piping.