Pultruded fibergalss I-bar grating with anti-slip grit (gray color) - 38" wide x 48" long x 1 1/2" thick - rated for DIN load class A.
 
This 38" wide trench drain grate is used where economy and corrosion resistance are required.  The grate comes with an anti-slip grit on the top that is particularly useful in wet and slimy environments.  Upon request it can be ordered without the traction grit.  It is typically used on an 36" wide prefabricated trench drain, 36" wide stainless steel trench drain, or 36" wide catch basin.  The slots are more prone to clogging, but this grate has a massive amount of open area so it is typically not a problem.  Typical uses are trench drains in slick production areas of manufacturing plants and food and beverage plants.