The right mesh size for your grating
GRP gratings are available in a range of mesh sizes. But which mesh is the right fit for your application? And what are the practical differences between them? In this blog, we explain it clearly.
What is mesh size?
Mesh size refers to the opening in the grating, the free space between the load-bearing bars. A smaller mesh size means smaller openings, a denser structure, and higher load bearing capacity per surface area. A larger mesh size provides more open space, which improves drainage, ventilation, and reduces overall weight. GRP gratings are typically available in four standard mesh sizes.
19×19 mm mesh
The 19×19 mm mesh has the smallest opening and is therefore the most closed variant. This prevents small objects or tools from falling through the grating, which is an important safety feature.
Typical applications:
- Food processing and hygienic production environments
- Work areas where tools or small components must not fall through the floor, for example in marinas and maritime applications
- Areas with strict safety requirements
18×38 mm mesh
The 38×38 mm mesh offers a well balanced combination of an open structure and load bearing capacity. It is one of the most commonly used options in industrial environments.
Typical applications:
- Work platforms in factories and utilities
- Rail and infrastructure
- Walkways and access platforms
- Environments with high water or dust permeability
50×50 mm mesh
The 50×50 mm mesh has the largest openings, providing optimal flow of water, air, and light. The grating is relatively lightweight and suitable for applications with lower load requirements. This mesh size is available in thicknesses of 13 mm or 50 mm. Other thicknesses are not typically kept in stock, but we are happy to explore custom options with you upon request. At a thickness of 13 mm, the grating is not suitable for use as a walkway.
Typical applications:
- Drainage gratings and covers
- Ventilation plenums and technical areas
- Decorative or architectural applications (13 mm thickness)
- Machine guarding (13 mm thickness)
Covered grating
In addition to open mesh gratings, covered grating is also available. This type of grating has a closed top surface and is used in areas where you want to prevent liquids, dust, or small particles from passing through the floor, or where a completely flat walking surface is required.
Which mesh is right for your project?
The right choice depends on three key factors: the load applied to the grating, the safety requirements, and the operating environment. Not sure which option is best for your application? We are happy to help you make the right choice.