Product specification

2" Thick Molded Fiberglass Grating, 2" Square Mesh

Updated Oct 17, 2026

2 inch fiberglass grating is the deepest of the three common US molded depths, for loads and spans that 1-1/2" grating cannot carry. Strongrate's catalog lists a 2" × 2" (51 × 51 mm) square mesh 2" (50 mm) deep at 4.4–4.8 lb/ft² (21.5–23.5 kg/m²) and 78% open area. It is not one of the DNV-listed models.

Strongrate catalog data: 2" deep molded grating, 2" square mesh (two rows as printed)

Mesh	Depth	Bar width (as printed)	Weight	Open area
2" × 2" (51 × 51 mm)¹	2" (50 mm)¹	5/16" / 3/16" (7.5 / 5.0 mm)¹	4.4 lb/ft² (21.5 kg/m²)¹	78%¹
2" × 2" (51 × 51 mm)¹	2" (50 mm)¹	5/16" / 1/4" (8.0 / 6.0 mm)¹	4.8 lb/ft² (23.5 kg/m²)¹	78%¹

As printed in Strongrate’s 2023 product catalog; confirmed in your quote and submittal drawings. The catalog prints two bar widths per depth without saying which is the top and which the bottom of the bar.

Notes

1Values as printed in the factory catalog (2023).

What panel sizes are available?

Strongrate's catalog lists 5 ft × 13.12 ft (1524 × 4000 mm); 4 ft × 12 ft (1220 × 3660 mm); 4 ft × 8 ft (1220 × 2440 mm); 3 ft × 10 ft (921 × 3050 mm) for the 2" deep, 2" square mesh. Send your layout or drawings, and the weight you design for, with the quote request. Sizes and weights of every product are compared on fiberglass grating sizes, weight and open area.

How much load can 2" molded grating carry?

Read the deflection at your clear span in the catalog tables below, for uniform and concentrated loads at ambient temperature. Halve the loads for impact. If the 2" table still falls short, compare 2" pultruded T-bar grating; pultruded grating is marketed as about twice as stiff as molded. Strongrate publishes no vehicle-load rating, so do not use these tables where wheels cross; see trench covers and drain grates.

Uniform load deflection, Strongrate 2" molded grating, 2" square mesh (catalog page 60)

Clear span	31 psf (150 kg/m²)	72 psf (350 kg/m²)	102 psf (500 kg/m²)	154 psf (750 kg/m²)	205 psf (1,000 kg/m²)	307 psf (1,500 kg/m²)	512 psf (2,500 kg/m²)	Max load, psf (kg/m²)
11-13/16" (300 mm)	< 0.01" (< 0.25 mm)	< 0.01" (< 0.25 mm)	< 0.01" (< 0.25 mm)	< 0.01" (< 0.25 mm)	< 0.01" (< 0.25 mm)	< 0.01" (< 0.25 mm)	0.02" (0.39 mm)	10,979 (53,602)
17-3/4" (450 mm)	< 0.01" (< 0.25 mm)	< 0.01" (< 0.25 mm)	0.01" (0.3 mm)	0.02" (0.45 mm)	0.02" (0.59 mm)	0.04" (0.89 mm)	0.05" (1.32 mm)	7,207 (35,186)
23-5/8" (600 mm)	0.02" (0.47 mm)	0.02" (0.59 mm)	0.04" (0.89 mm)	0.05" (1.32 mm)	0.06" (1.61 mm)	0.18" (4.69 mm)	0.24" (6.13 mm)	4,318 (21,083)
29-1/2" (750 mm)	0.02" (0.62 mm)	0.06" (1.46 mm)	0.09" (2.19 mm)	0.13" (3.29 mm)	0.26" (6.5 mm)	0.36" (9.23 mm)	—	2,760 (13,475)
35-7/16" (900 mm)	0.05" (1.23 mm)	0.10" (2.64 mm)	0.16" (4.09 mm)	0.24" (6.14 mm)	0.32" (8.15 mm)	—	—	1,916 (9,353)
47-1/4" (1200 mm)	0.13" (3.4 mm)	0.19" (4.75 mm)	0.27" (6.78 mm)	0.36" (9.16 mm)	0.48" (12.07 mm)	—	—	1,129 (5,510)

Cells are deflection under static load at ambient temperature, as printed in Strongrate’s 2023 catalog (mm), with inches converted; “—” means no value is printed. Halve the loads for impact or dynamic conditions. Confirm the values for your span in the submittal before final design.

Notes

Deflections as printed in the factory catalog (2023), static loads at ambient temperature.
Catalog tables.

Concentrated point load deflection, Strongrate 2" molded grating, 2" square mesh (catalog pages 60–61)

Clear span	331 lb (150 kg)	772 lb (350 kg)	1,102 lb (500 kg)	1,653 lb (750 kg)	2,205 lb (1,000 kg)	3,307 lb (1,500 kg)	5,512 lb (2,500 kg)	6,614 lb (3,000 kg)
11-13/16" (300 mm)	—	0.01" (0.37 mm)	0.02" (0.48 mm)	0.03" (0.76 mm)	0.04" (1.08 mm)	0.06" (1.47 mm)	0.09" (2.41 mm)	0.11" (2.89 mm)
17-3/4" (450 mm)	0.01" (0.27 mm)	0.02" (0.56 mm)	0.03" (0.73 mm)	0.04" (1.14 mm)	0.06" (1.63 mm)	0.09" (2.2 mm)	0.14" (3.61 mm)	0.17" (4.34 mm)
23-5/8" (600 mm)	0.02" (0.39 mm)	0.03" (0.83 mm)	0.04" (1.08 mm)	0.07" (1.69 mm)	0.09" (2.41 mm)	0.13" (3.26 mm)	0.21" (5.35 mm)	0.25" (6.42 mm)
29-1/2" (750 mm)	0.03" (0.67 mm)	0.06" (1.57 mm)	0.08" (2.01 mm)	0.13" (3.19 mm)	0.18" (4.68 mm)	0.25" (6.33 mm)	0.39" (9.87 mm)	—
35-7/16" (900 mm)	0.04" (0.95 mm)	0.09" (2.3 mm)	0.12" (2.95 mm)	0.18" (4.69 mm)	0.27" (6.96 mm)	0.40" (10.11 mm)	—	—
47-1/4" (1200 mm)	0.06" (1.57 mm)	0.16" (3.95 mm)	0.22" (5.53 mm)	0.32" (8.02 mm)	0.42" (10.71 mm)	0.61" (15.53 mm)	—	—

Notes

Deflections as printed in the factory catalog (2023), static loads at ambient temperature.
Catalog tables.

How to read span, load and deflection columns: fiberglass grating load tables.

Which resins and surfaces can you order?

Strongrate’s catalog lists fire-retardant vinyl ester, isophthalic, food-grade isophthalic and orthophthalic resin for molded grating, with a concave (meniscus) or gritted top, or a solid cover with a checker or grit finish. Resins and temperature limits are compared on molded fiberglass grating.

How is 2" molded grating quoted and shipped?

Made in Nantong, China, and shipped from China. Full containers and project quantities are quoted factory-direct; orders under about 500 sq ft, or needed in under 3 weeks, are referred to US stocking importers. Prices are quoted per project: see fiberglass grating price per square foot, add hold-down clips, and request a quote.

Frequently asked questions

Is 2" molded grating on Strongrate’s DNV type approval?

No. The DNV certificate lists four molded models, at 1", 1-1/4" and 1-1/2" deep. Strongrate’s catalog rates its resin systems ASTM E84 Class 1; ask for the fire test report for 2" grating with your quote request.

Is 2" square-mesh grating the same as heavy-duty molded grating?

No. Strongrate’s catalog marks 2" and deeper versions of its 1-1/2" square mesh as heavy duty (HD), with thicker bars: at 2" deep it lists 8.2 lb/ft² (40.0 kg/m²) and 56% open area, against 4.4–4.8 lb/ft² (21.5–23.5 kg/m²) and 78% for the 2" mesh. Compare both load tables before choosing.

Should I use 2" molded or pultruded grating for a long span?

Compare both load tables at your span and deflection limit. Pultruded grating is marketed as about twice as stiff as molded; see pultruded fiberglass grating and molded vs pultruded fiberglass grating.

Molded fiberglass grating
Molded fiberglass (FRP) grating from Strongrate’s Nantong factory by depth and mesh: square, rectangular and mini meshes, the four DNV-listed models with their ASTM E84 results, panel sizes, resins, surfaces and how to get factory pricing.
1-1/2" molded fiberglass grating
Specifications, ASTM E84 results, panel sizes and catalog load tables for Strongrate 1-1/2-inch-deep molded fiberglass grating with a 1-1/2-inch square mesh (DNV-listed model 38×38×38 mm), and how to order it.
Rectangular mesh fiberglass grating
Strongrate’s 1-inch × 4-inch and 1-inch × 6-inch rectangular-mesh molded grating: catalog weight, open area, span direction, panel sizes and deflection tables, the DNV-listed 1 × 6 vinyl ester model’s ASTM E84 results, and how to order.
2" T-bar fiberglass grating
The two 2-inch T-bar pultruded grating types in Strongrate’s catalog (T-3320, T-5020) with open area, weight, catalog deflection tables and resins, plus the ASTM E84 results of DNV-listed T5020.
Fiberglass grating load tables
The load tables in Strongrate’s catalog for each product, and how to read fiberglass grating load tables: uniform and line loads by span, deflection limits and safety factors.

Request a quote

Send span, design load, panel size, quantity and ZIP code for 2" molded grating. Quotes within 1 business day (US Central time).

Request a quote Order a sample

Sources

Strongrate product catalog “Your Best FRP Solution” (image PDF, Sep 2023), supplied by the site owner (accessed Oct 17, 2026)
DNV Type Approval Certificate TAF0000191 Rev. 1, with ASTM E84-19a results and conditions (PDF on Strongrate’s ShipServ supplier profile) (accessed Oct 15, 2026)
Fibergrate pultruded grating page; American Grating pultruded page (accessed Oct 15, 2026)
McNichols molded fiberglass grating catalog; Fibergrate and Strongwell literature (accessed Oct 15, 2026)