Product Overview
Molded fiberglass products are available in specialty patterns for screens or unique project applications demanding corrosion resistance and durability. Manufactured using processes similar to molded FRP gratings, fiberglass rovings are fused with thermosetting resins to create products designed for specific applications. Each product contains approximately 65% resin and 35% fiberglass rovings which optimizes corrosion resistance, UV protection, and structural integrity.
- Wide range of high-performance resins
- Fire retardant, meeting ASTM E84 and ASTM D635 requirements
- Electronically transparent and non-conductive
- Easily fabricated and virtually maintenance free
Molded FRP Specialty Patterns & Screens
Covered Molded Grating
All molded gratings are available with a solid 1/8” or 1/4” thick fiberglass plate applied to the top surface of the grating. Often used in loading or storage areas, the solid surface prevents the passage of contaminants or debris to areas below. Covered gratings are also an excellent choice for odor control applications.
Available in all resins with smooth, coarse grit, or fine grit surfaces.
Micro-Mesh® Molded Grating
Vinyl ester resin system with a flame spread rating of 25 or less for dependable resistance to both acidic and alkaline environments.
The 1/2” square opening of Micro-Mesh molded FRP gratings is ADA conforming and makes them popular for applications in the public way. Available in 1” or 1-1/2” depths, Micro-Mesh has bi-directional strength which facilitates efficient layout and fabrication.
Available in the full range of resins offered for molded products, Micro-Mesh surface options are concave meniscus, optional smooth (sanded) surface, or optional coarse or fine grit surfaces.
For a further details on mesh openings and panel sizes, please view our Sizes & Options.
Ecograte® 62
ADA compliant Ecograte 62 is specifically designed to meet requirements of the National Marine Fisheries Service and U.S. Army Corps of Engineers for marine decking and docks. With a 3/4” x 4” mesh and 62% open area, this grating protects seagrass and other shallow marine habitats beneath docks. Ecograte®62 comes with a standard coarse grit walking surface or the optional Aqua Grit (fine grit) surface which provides increased comfort under bare feet.
Standard colors: light or dark gray
Stock panels: 4’ x 8’, 4’ x 10’, or 4’ x 12’
Weight per square foot: 3.0 lbs.
AirMesh® Screening
Specifically designed to meet US Navy requirements for air intake screens, Airmesh Screening is 1/2” deep with 1/8” thick bars spaced 1-1/2” on center. With 87% open area, AirMesh Screening serves marine and general industrial applications where generous airflow and screening is important. Grating surfaces are sanded smooth for additional worker safety.
Standard colors are yellow, green, or dark gray.
Sheet size: 4’ x 8’
Weight per square foot: 0.8 lbs.
Multigrid® Grating
Multigrid® Grating is a 1/2″ deep square mesh grating/screen with 3/16” thick bars spaced 2” on center. This lightweight product, with 82% open area is designed for uses such as screening, fencing, machine guarding, or caging. Applications can include flooring and walkways if the grating is fully supported.
Standard colors are yellow, green, or dark gray.
Sheet size: 4’ x 12’
Weight per square foot: 1.0 lbs.
Standard Resins & Colors
Corvex®
This isophthalic polyester resin system outperforms a number of competitive fiberglass and metal products. Corvex meets the requirements for corrosion resistance found in industrial, chemical processing, and water/wastewater applications.
Flame Spread: ASTM E84 rating of 25 or less.
Certifications: meets the USCG requirements for general fire rating*.
Standard colors: yellow, light gray, dark gray, or green.
Vi-Corr®
A superior vinyl ester resin developed for reliable performance in the toughest environments. It offers outstanding resistance to a wide range of highly corrosive situations, from caustic to acidic.
Flame spread: ASTM E84 rating of 25 or less.
Certifications: DNV GL Type Approval No. TAF000003C; ABS Type Approval No. 01-HS34733-X; meets the USCG requirements for general fire rating*.
Standard colors: orange or dark gray.
FGI-AM®
This food-grade isophthalic polyester resin system offers antimicrobial properties to inhibit the growth of bacteria on the surface of the composite to protect the product itself. FGI-AM provides the necessary corrosion resistance to meet the requirements of the food and beverage industry. This product is intended only for non-public health uses.
Flame Spread: ASTM E84 rating of 25 or less.
Certifications: USDA Approvable.
Standard colors: light gray or green.
XFR
This extra fire-retardant vinyl ester resin is recommended for use where fire potential is high.
Flame Spread: ASTM E84 rating of 10 or less.
Certifications: meets the USCG requirements for general fire rating*.
Standard color: dark gray.
ELS
This extremely low smoke resin is an acrylic-modified polyester system that is ideal for tunnel, offshore, mass transit and other confined space applications. ELS exhibits low ignitability, low smoke generation and extremely low smoke toxicity.
Flame Spread: ASTM E84: flame spread index of 25 or less, a smoke developed index of 100 or less and Fuel Contribution of 0.
Certifications: DNV GL Type Approval No. TAF000003C; meets the USCG requirements for general fire rating*.
Standard color: dark gray.
Super Vi-Corr®
This family of resin systems consists of more than 30 custom formulas engineered to provide corrosion control solutions in applications that are too severe for conventional FRP and other building materials. Each Super Vi-Corr resin was engineered for the best possible performance in specific chemical and/or elevated temperature environments.
These systems exist for aggressive chemical environments with exposure to solvents, acidic oxidizers, chlorine dioxide, sodium hypochlorite and liquid desiccants. Certain formulas are also suited for elevated temperature applications up to 400° F. Super Vi-Corr gratings are typically used for packing hold-downs and support in environmental and process scrubber applications.
Flame Spread: non fire retardant, unless specified.
Standard color: natural – tan to beige.
*For specific requirements and questions, please contact technical services.
Custom colors are available on special order, subject to minimum quantity requirements.
For further information on resins and chemical resistance, please view the Chemical Resistance Guide.
Product Overview
All FRP grating should be securely fastened to its supporting structure to protect the grating and increase product service life. Specialty clips manufactured from type 316 stainless steel are available for all fiberglass products. Clips can be used to attach grating or plate to the supporting structure or fasten adjacent grating panels to minimize load induced differential deflection.
Maximum recommended clip spacing is 48 inches on center with a minimum of four (4) clips per piece of grating.
Fiberglass Grating Fasteners
Type “M” Saddle Clip
Used to secure molded or pultruded panels to a support using two adjacent bearing bars. Bolt not included with standard clip order.
Type “J” Hold Down Clip
Used to secure molded grating to a support using one bearing bar. Bolt not included with standard clip order.
Type “F” End Panel Clip
Used to connect adjacent molded FRP Panels. Fastening bolt included with clip order.
Type “E” Hold Down Clip
Specifically designed to attach Ecograte62 molded grating to supporting structures. Bolt not included with standard clip order.
Type “FC” Hold Down Clip
Type “FC” clips are used to secure pultruded grating to adjacent supports. Bolt not included with standard clip order.
Type “G” Friction Clip
Used to attach molded or pultruded grating to support flanges that are less than ¾” thick. Type “G” Hold Down clips are a friction clip and do not require drilling into the support flange. Fastening bolt included with clip order.
Type W Clip
Used to secure covered grating or plate to supporting structures. Bolt not included with standard clip order.
Type WLP Clip
Used to secure covered grating or close mesh FRP grating to supporting structures. Bolt not included with standard clip order.
