Duraslot® linear surface drains are made by incorporating a heavy-duty aluminum inlet slot mounted on top of N-12® corrugated polyethylene pipe. The slotted inlet at grade intercepts sheet flow across a paved area or is installed against a curb or barrier in a gutter-type application. These high-capacity drains are designed to remove storm water as it flows across paved or cleared areas, or as it collects in low spots. Duraslot drains cost less than other systems that can support vehicular traffic, and are easy to install - ten-foot lengths can be handled without machinery and are quickly set in place. And because they are made using N-12 corrugated HDPE pipe, Duraslot drains are highly corrosion and abrasion resistant. Pipe diameters range from 4" to 36" and are complemented by a complete line of fabricated fittings. Slots are available in 2-˝" heights for residential and pedestrian applications, and 6" heights for heavy H25 loading.