Shower drain systems that are easy to install. Linear drain with award winning universal design, fully manufactured in the USA. The perfect tile drain solutionFor reliability, form, and function, the ProLine linear drain shower system stands above all other shower drain systems. Recommended by Michael Graves, one of The New York Five, the ProLine linear drain shower system is Quick Drain USA's latest and most luxurious offering. The true beauty of trench drains for showers lies in the fact that they are designed and manufactured to offer quality, luxury and an elegant design to any home.