HEAVY DUTY FIBERGLASS GRATING

Heavy Duty Grating is used to covers areas with heavy traffic. We offer both Pultruded  Heavy Duty (HD) Grating and High Load Capacity (HLC) Molded Grating.

Our High Load Capacity (HLC) molded grating is heavy duty, corrosion-resistant and low-maintenance. It’s engineered to carry heavy traffic liketrucks and forklifts. Our molded HLC FRP Grating is available in 4′ x 6′ panels  1.5″ or 2″ deep in Polyester or Vinyl ester resin systems. HLC grating  has many advantages over steel grating for performance and cost effectiveness. With a much higher strength-to-weight ratio, molded HLC fiberglass grating is easy to handle, making for quick installation.

In stock at a distribution center close to you.

Curious about which fiberglass grating specifications are right for your project?

Download our Grating Selection Chart to help you find the right type of grating. To help you with load calculations, we have a handy molded grating load table PDF with information on the load capacities of different grating sizes.

We’re ready to answer any questions – use our Quick Quote Form.

Molded 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.

Gratings & Covers

Common Sizes and Applications

Common sheet sizes for FRP grating include: 4’x8′, 4’x12′, and 3’x10′. Common thicknesses include: 1″, 1.5″ and 2″

Our molded FRP gratings have applications in many industries, including:

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

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

Support and Stability
Molded Fiberglass Grating Panels 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.