Building Materials House Roof Drainage System Steel Rainwater Channel Aluminum Rain Gutter. Rust-Proof Aluminum Material: Aluminum alloy construction ensures durability and prevents rusting for over 30 years. Seamless Leak-Proof Design: Cut from one long piece to eliminate joiners, significantly reducing leak risks. Cost-Effective Solution: Average $2-3 per foot, making it one of the cheapest and most affordable gutter options. Easy DIY Installation: Lightweight and no soldering required, allowing for simple self-installation without professionals. Customizable Colors: Available in white, brown, gray, and other customized colors to match any roof style. High Water Capacity: K-style design carries twice more water than U-shape, ensuring efficient drainage. Flexible OEM/ODM Service: Supports full customization from designs or samples, including private label packaging. Comprehensive Warranty: Offers 15-30 years warranty with free replacement for faulty products during guarantee period.