Don Park BV4BE5 B-Vent 4 in. Adjustable 45 Degree Elbow is a adjustable duct elbow. In plain language, it is used to change the direction of a duct run.

This item belongs to Vent Pipe And Fittings, so it should be selected by matching the listed model, size, and application to the job requirements. Purpose: Used to change the direction of a duct run. Where it is used: Used where ductwork needs to turn around framing, equipment, or layout constraints.

How it is used: Matched to duct diameter and angle, then installed into the duct run to redirect airflow. Key features: Listed size/rating from title: 4 in.; Changes duct direction; Adjustable angle design Dimensions/weight: 4 in.; weight not specified in the available source data. Note: Installation requirements and compatibility should be confirmed with manufacturer documentation or a qualified HVAC/R technician.