Homeowners looking to enhance their indoor Rinnai water heater systems can benefit from this 45-degree vent pipe elbow, available in a convenient 2-pack. Made with durable materials, these elbows feature NPT thread type for secure connections. Weighing 2 pounds each, they are designed to facilitate proper venting, ensuring efficient operation of your water heater. Compatible with most indoor Rinnai models, these elbows provide a reliable solution for your plumbing needs.