Slot Drain was invented and patented by Glen Kehler in 1986. During a long 30 year career as a Construction Concrete professional Glen struggled wondering why Standard Industrial drainage plans call for an expensive 4 sloped floor process and an inefficient graded trench drain.

The 4 slope plan creates an uneven surface leaving production employees to contend with continual changes in floor elevations for the life of the building. Also, the maintenance teams must deal with heavy grates that are prone to rust, wear and tear and eventual expensive replacement.

He knew there had to be a better way!

In 1986 at the height of his career he turned his attention to the creation of a slot drain system, a pre sloped, pre assembled, pre slotted drainage solution.

In one fell swoop the problem was solved!


Slot drain solved the issue of expensive installations, future workers health and maintenance wear and tear. Slot drain systems was the world’s first grate less trench drain solution allowing for the same drainage performance to be upheld without the hassles of a grated trench.

Fast forward to today looking back over the past 3 decades Slot Drain Systems has been specified by architects and engineers throughout North America, and can be found equally in farms, warehouses, FDA regulated manufacturing facilities, residences, pool sides, slaughter houses, zoos, aquariums, car washes, automotive facilities.

In 2013 nearing his 80th birthday Specialloy Industries the contract manufacturer for Slot Drain acquired the company. Honoring, Glen’s hard work Specialloy is intent on bringing Glen’s original drain design to even greater heights creating many new slotted products for new drainage market segments. Slot Drain’s team of professionals are proud to assist you with any project where you need to move surface drainage quickly, aesthetically and economically from your environment.




Slot Drain can solve a lot of problems that are common in grated trench drain systems. From this chart you can see how we tackle all these issues.

Issues in grated drainsBenefits of using Slot Drain
Chemical eats grates and drain channels.Can be made of stainless steel and is corrosion resistant in high temperatures.
Grates break and may cause injury, especially in heavy duty applications.Can handle beyond Load Class F and is forklift friendly.
Grates trap bacteria.Clean in appearance and inside.
Grates deteriorate and needs replacement.No grating and lower the cost of maintenance.
Difficult to clean.Very easy to clean with a cleaning paddle or self-flushing system.


Heavy duty – Airports, Military, Fire Halls, Highways, Transportation Terminals, Docks, Ports, Refineries, Warehouses, and manufacturing facilities

Automotive – Car washes, dealerships, gas stations, garages, parkades

Food and Beverage Industries – Abattoirs, Slaughterhouses, Dairy farms, Wineries, Breweries, Seafood Markets

Educational, Commercial and Residential – Playgrounds, Athletic Fields, Commercial Kitchens, Swimming Pools, Residential Parking and Garage

Animal Facilities – Hogs and Barns, Animal Hospitals, Zoos

Landscaping – Parks, Landmarks, Fountains

Slot Drain can also be used in many other applications. Send us an email to info@slotdrainsystems.com or call our Toll Free number 855.497.7508 for a FREE drainage consultation.



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Slot Drain is available to be shipped worldwide and arrives fully assembled, ready to be installed. Contact us for further details on shipping, including to other countries.

Slotdrain Guide