1.90°Downspout Elbow can be used to connect your sewer pipes and gutters.which lasts longer and is more durable than plastic products.Long-lasting protection for your home or building. 2.3x4 downspout elbow Angle is 90° is designed to fit perfectly with 3" x 4" downspouts, ensuring efficient water drainage from the roof to the ground. 3.90 Degree Gutter Elbow is designed to efficiently redirect water from the roof to the ground.And easy to install. 4.Downspout Gutter Elbow is made of high-quality aluminum, which is durable and can withstand harsh weather conditions and Avoid rain damage to your home or building.Save you expensive repairs or refurbishments. 5.If you have any questions about our 90 Gutter Elbow please contact us, including pre-sale and post-sale questions, we will reply your message as soon as possible.