Dundas Jafine’s Aluminum Elbows can be used to vent most types of heating units.  This product features an all aluminum, 4 piece construction and is fully adjustable to 90°. Includes one crimped end and one solid end to ease assembly. The E432 Heavy Duty Aluminum Elbow is made of 0.016” gauge aluminum which is thicker than our traditional elbow.  This heavy duty elbow offers more rigidity to the application and better handling to the contractor.