4" RV 90° Type B Gas Adjustable Elbow - 104230 - 4RV-EL90
Used when an offset is required to avoid obstructions such as rafters, joists and other construction obstacles.
Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.