The Dura-Trench slot drain system is a spin on the classic corrugated metal slot drain system. We took this classic concept and improved upon it. First, we improved the interior of the slot drain and made it ultra-smooth to improve flow rates and reduce debris build up. With proper slope, scouring velocities are easily achieved. The next improvement that was made is to anchor the top load bearing flange into the concrete with concrete anchor studs. This is very important for the long term durability of a slot drain in heavy traffic applications as it ensures the load is transferred properly to the surrounding concrete encapsulation. The Dura-Trench slot pipe also includes installation devices to aide in the installation of the product. These installation devices offer a way to level the slot drain and assist in anchoring and aligning the slot drain. This assures that proper concrete consolidation under the slot drain can be achieved. The Dura-Trench slot drain is currently being offered in 4", 6", 8", 10", 12", 15", 18", 21", 24", and 36" pipe widths. All of these sizes come standard with variable height risers to give the designer the desired slope and flow rate.