Wire Mesh for Machine Guarding & Safety Screens
From robot cells and mezzanine infill to fan guards and shop partitions, wire mesh puts a durable, see-through barrier between people and moving equipment. Howard Wire cuts welded and heavier woven mesh to your size in galvanized, plain steel, and stainless — shipped nationwide from Hayward, California.
A good guard does two jobs at once: it keeps hands, tools, and debris out of a hazard, and it still lets an operator see and hear what the machine is doing. Wire mesh is one of the most common ways to hit both targets, because you control the opening size, the wire diameter, and the material to match how much protection and visibility a given spot needs.
Below is a plain-spoken rundown of the mesh types we stock for guarding, how material choices shake out, and the tradeoff between opening size, visibility, and protection. Every panel we ship is cut to your dimensions — no stock-size guessing.
Which Mesh For Which Guard
Welded vs. Woven vs. Expanded
Three product families cover most guarding work. The right pick depends on how rigid the panel needs to be, how open you want it, and how it gets framed.
| Type | Best for | Character |
|---|---|---|
| Welded Wire Mesh | Cell fencing, partitions, mezzanine infill | Rigid, uniform square openings; wires fused at each cross point for a flat, stable panel. |
| Woven Wire Mesh | Fan/vent guards, finer screens, tighter openings | Interlocked wires; heavier crimped weaves stay stiff while finer counts add protection and filtration. |
| Expanded Metal | Heavy-duty guards, walkovers, high-abuse areas | Cut-and-stretched from solid sheet — no crossing wires to loosen; very strong for its weight. |
| Perforated Metal | Guards where a cleaner, architectural look matters | Punched holes in solid sheet; precise open area and a finished appearance. |
General guidance only — confirm the panel, framing, and fastening for your specific application.
Material Choices
Galvanized
The workhorse for indoor guarding and partitions. Zinc coating fights rust, and it is cost-effective for large runs of fencing and infill.
Plain Steel
Maximum strength per dollar where corrosion is not a concern, or where panels will be painted or powder-coated after fabrication.
Stainless (304 / 316)
For washdown, food, marine, chemical, or outdoor exposure. 316 stainless adds extra corrosion resistance in harsh environments.
Opening Size vs. Visibility vs. Protection
This is the core tradeoff. Smaller openings and heavier wire mean more protection and a stronger reach barrier, but less light and slightly reduced sightlines. Larger openings maximize visibility and airflow but let smaller objects — and fingers — through. The heavier the wire diameter, the more rigid and impact-resistant the panel, independent of opening size.
| You want more… | Move toward… | Trade you accept |
|---|---|---|
| Protection | Smaller openings, heavier wire | Less light and airflow; heavier panel |
| Visibility / Airflow | Larger openings, finer wire | Smaller objects can pass; less rigid |
| Rigidity | Heavier wire diameter, welded construction | More weight and cost per panel |
Guarding standards typically pair a maximum opening size with a minimum safe distance (standoff) from the hazard — the farther the guard sits from the moving part, the larger the opening it can have. Because those requirements depend on the standard you are working to and your specific machine, decide the required opening and standoff for your situation first, then we will match mesh to it. Mesh in these families is commonly specified for guarding and safety screens, but we do not certify compliance to any particular standard on your behalf.
Not sure which mesh fits your guard?
Send us the opening, standoff, and panel size — we will cut it to fit and quote it.
Explore Guarding Materials
Welded Wire Mesh
Rigid square-opening panels for cell fencing, partitions, and infill. Browse welded mesh ›
Woven Wire Mesh
Crimped and plain weaves for fan guards and finer screens. Browse woven mesh ›
Perforated Metal
Punched-sheet guards with a clean, finished look. Browse perforated ›
Expanded Metal
Strong, one-piece mesh for high-abuse guarding. Browse expanded ›
Frequently Asked
What opening size should a machine guard use?
It depends on the standard you are following and how far the guard sits from the hazard — most guarding standards pair a maximum opening with a minimum standoff distance, so a guard mounted farther away can use a larger opening. Determine the required opening and standoff for your machine and standard first, then we will match mesh to those numbers. We do not assert compliance to any specific standard for you.
Welded, woven, or expanded metal for guarding?
Welded wire mesh is the common choice for rigid, uniform panels like robot-cell fencing, partitions, and mezzanine infill. Heavier woven mesh suits fan and vent guards or where you want a tighter opening. Expanded metal is a strong, one-piece option for high-abuse areas and walkovers. If you tell us the use and opening you need, we will point you to the right family.
Can you cut mesh to my exact panel size?
Yes. Everything is cut to size, and we offer custom fabrication plus nationwide shipping from Hayward, California. Send your dimensions, material, and opening, and we will quote a cut-to-fit panel. Contact us or call (510) 887-8787.
Which material should I choose?
Galvanized is the cost-effective workhorse for most indoor guarding and partitions. Plain steel gives maximum strength where corrosion is not a concern or the panel will be coated afterward. Choose 304 or 316 stainless for washdown, food, marine, chemical, or outdoor exposure. Not sure? Tell us the environment and we will recommend one.
Do finer openings reduce visibility?
Somewhat. Smaller openings and heavier wire increase protection and rigidity but let through less light and airflow. Larger openings maximize sightlines and ventilation but allow smaller objects to pass. Our mesh-to-micron conversion chart can help you think through opening sizes before you decide.