Fiberglass Trench Covers

Fiberglass Trench Cover Grating

National Grating high-strength molded FRP grating can be designed and used like traditional trench cover grating, but with all the many benefits of fiberglass.

Pultruded FRP Trench Cover

Pultruded FRP Trench Cover Grating

National Grating Fiberglass Trench Cover Grating is ideal for covering trenches, drains sumps,  waterways, and  many other flooring applications in corrosive environments.

FRP Trench Grating is the perfect long-lasting solution for covering open trenches and drains. Steel and aluminum grating have considerable down-sides; they corrode, wear down quickly, cause maintenance headaches and downtimes, and are costly to install.

Strong, Lightweight and Corrosion-Resistant
Pultruded Fiberglass Grating has the strength of steel, but it won’t corrode like steel can.

Safer Walking Surface for Trench Covers and Walkways
A coarse, gritted epoxy coating enhances traction.

T-5000 Trench Grating

T-5000 Fiberglass Trench Grating

Support and Stability
Pultruded FRP Trench Covers are equally strong in both directions

Easy Fabrication
FRP Flooring Panels are lightweight, easy to transport, and can be cut and fabricated using standard hand tools.

Extended Life
The coated resin surface increases resistance to chemical corrosion and continuous UV exposure.


Molded FRP Mesh is available in 1″, 1-1/2″ and 2″ thick Panels.

Standard Panel sizes are 3′ x 10′,  4′ x 8′, 4′ x 12′ and 5′ x 10′.

Molded Trench Grating

Molded Trench Grating with S.S. Clip

We can cut down the panels to any size you like, or you can cut them yourself. Be sure to use a diamond-tip blade as a standard saw blade will dull very quickly.

1-1/2″ x 1-1/2″ Square FRP grating is especially useful for replacing steel grating or aluminum grating in corrosive environments or where other types of gratings require frequent replacements. For smaller mesh sizes check out our mini-mesh Fiberglass Grating.

Resin Systems
National Grating Fiberglass Trench and Drain Grates are available in two standard resin systems. Each providing different levels of corrosion protection. Both resin systems meet Class 1 Flame Spread Rating per ASTM E-84 test standards.

Polyester: A premium-grade isophthalic polyester resin system that provides excellent corrosion protection. Standard colors: Dark Gray, Light Gray, Yellow, and Green. Equivalent to Fiberglass Grating Competitor Brand and Strongwell Duragrate PP.

Vinyl ester: A chemically resistant system that provides the highest level of corrosion protection. Standard colors: Yellow, Dark Gray, and Orange. Equivalent to Fiberglass Grating Vinyl Ester and Strongwell Duragrate VE.


Fiberglass Grating Trench Grating

Fiberglass Trench Cover Grating

Call us at 1-877-984-7788 for a fabricated quote. 

Not sure which type of grating is best for your application?

Download our Grating Selection Chart use our Quick Quote Form.


 Call us at 1-877-984-7788 to speak with a National Grating FRP Specialist.

Molded FRP Trench Covers or Pultruded Grating?

Covered Trench Grating Applications for Your Industry

Our  FRP flooring has applications in many industries, including:

  • metals & mining
  • pulp & paper
  • recreation
  • water parks
  • telecommunications
  • shipping centers
  • transportation facilities
  • water & waste treatment, and
  • numerous architectural uses.
  • chemical processing
  • food & beverage
  • marine
  • aquatic centers
  • oil & gas
  • power
  • manufacturing
  • construction
  • pharmaceutical

Molded Grating Trench Covers

Molded Grating Trench Covers


Features of  Fiberglass Trench Cover Grating

Corrosion Resistant
Extremely Strong
Impact Resistant
Non-Skid Surface / Anti-Skid
Low Electrical and Thermal Conductivity
Easily Fabricated in the Field



Bulk and Wholesale Discounts Available on Large Orders


Our Fiberglass Grating Houston distributionshipping to Austin, Fort Worth, El Paso, Houston, San Antonio, Dallas, Arlington, Corpus Christi, Plano, Laredo, Lubbock, Garland, Irving, Amarillo, Grand Prairie, and Brownsville.

All our fiberglass grating Houston warehouse products meets required frp specs Fast Delivery via our Superior Logistics Network

National Grating provides fiberglass trench cover grates to all major cities including:

Texas: Houston, Dallas / Fort Worth, San Antonio, Austin, El Paso, Arlington, Dallas, and Brownsville

Florida: Jacksonville, Miami, Tampa, Orlando, and St. Petersburg

Georgia: Atlanta, Augusta, Columbus, Macon, Savanna, Athens, Sandy Springs, and Roswell

North Carolina: Charlotte, Raleigh , Greensboro , Durham , Winston-Salem , Fayetteville , and Cary

Massachusetts: Boston, Worcester, Providence, Springfield, Bridgeport, New Haven, Hartford

New York: Buffalo, Rochester, Monroe, Yonkers, Westchester, Syracuse, and Albany.

New Jersey: Newark , Jersey City, Paterson, Elizabeth, Edison, Woodbridge, and Lakewood

Illinois: Chicago , Aurora, Rockford , Joliet , Naperville, Springfield , Peoria, and Elgin

Virginia: Virginia Beach, Norfolk, Chesapeake, Richmond, Newport News, Alexandria, Hampton

Pennsylvania: Philadelphia, Pittsburgh, Allentown, Erie, Reading, Scranton, and Bethlehem

Indiana: Indianapolis, Fort Wayne, Evansville, South Bend, Carmel, Fishers, Bloomington, Hammond

Ohio: Columbus, Cleveland, Cincinnati, Toledo, Akron, Dayton , Parma , Canton, and Youngstown

California: Los Angeles, San Diego, San Jose, San Francisco, Fresno, Sacramento, and Oakland

Michigan: Detroit, Grand Rapids, Warren , Sterling Heights, Lansing Eaton & Ingham , and Ann Arbor

We can ship within 2 business days to the following Locations:

Seattle, Spokane, Tacoma, Phoenix, Tucson, Scottsdale, Nashville, Portland, Eugene, Bend, Oklahoma City, Tulsa, Norman, Hartford, Nampa, Meridian, Idaho Falls, Bangor, Augusta, Manchester, Portsmouth, Concord, Providence, Newport, Warwick, Missoula, New Haven, Stamford, Des Moines, Cedar Rapid, Memphis, Knoxville, St. Louis, Kansas City, Baltimore Annapolis,  Shreveport, Colorado Springs,  Bolder, Fort Collins, Columbia, Charleston, Mount Pleasant, New Orleans, Baton Rouge

Salt Lake City, Park City, St. George, Wichita, Topeka, Henderson, Carson City, Iowa City, Jackson, Biloxi, Gulfport, Albuquerque Santa Fe, Charleston, Billings, Bozeman, Wilmington, Dover, Newark, Sioux City, Rapid City, Fargo, Morgantown, Huntington, Boise, Bismarck, Anchorage, Juneau, Fairbanks, Burlington, and Cheyenne,Waterbury, Roanoke, Gary, Little Rock, Fayetteville, Hot Springs, Louisville, Lexington, Frankfort, Frederick, Birmingham, Mobile, Huntsville, Milwaukee, Madison, Green Bay, Minneapolis, St. Paul, Duluth

Our pricing and service experts are standing by to help to find the best product for your project. With many varieties in stock and expedited shipping, we can supply your project with mini-mesh fiberglass grating at the best possible price with the lowest freight charges.