Elbow90Degree Elbow, Pipe ElbowFeatures: Applying for Air Ventialtion Systems or Kitchen Smoking Exhaust. 1. Material: galvanized steel. Stainless steel or PVC is available. 2. Angle range: 15, 30, 45, 60, 90° Can adjustable. 3. Customized design is welcome. 4. Used for construction ventilation or smoking exhaust. 5. Manufacturing Bend, Elbow, adaptor, reducerand air duct, pipe fitting. 6. Adjustable to any DEGREE ANGLE for this elbow is perfect.