linear drainage grate trench channel drainage made from aluminum and stainless steel. linear drainage grate trench drains offer a series of trench drain grates in stainless steel and aluminum. The drains are available in 4.5" widths, 3" high, length 3m/2m/1m. The linear drainage grate Trench Drain line has a variety of grate options to choose from and can satisfy the most technically challenging drainage issues. linear drainage grate trench drains are made of factory manufactured modular channel units made from corrosion resistant stainless steel, has grates from a variety of materials for all loading applications. The channels are available with a built-in v slope on the gutter bottom. 1. Quickly slop; With deodorant syphon; 2. Easy Installation, with Adjustable Legs and flange side; 3. Easy to clean, with removale siphon and grate cover; 4. Safe installation and use, with smooth sides; 5. OEM or ODM service is available