What is 3/8 Expanded Metal?

3/8 expanded metal refers to expanded metal with a **3/8 inch (9.5mm) short way of diamond (SWD)** opening size. It is a medium-size mesh pattern that balances strength, visibility, ventilation, and security—making it one of the most widely used standard sizes in North America and global markets.

The 3/8″ specification describes the short diagonal of the diamond opening; the long way of diamond (LWD) is typically double the SWD, measuring **3/4 inch (19mm)** for standard 3/8 expanded metal. This proportional diamond shape ensures uniform strength and structural stability across the entire sheet.

This size is not overly fine or overly open, making it ideal for safety guards, fencing, screens, platforms, vents, and general fabrication. It is widely stocked by hardware retailers and used by contractors, fabricators, and homeowners alike.

At ANPING METAL MESH, we produce 3/8 expanded metal with strict dimensional accuracy. As a professional China expanded metal mesh manufacturer, we guarantee consistent opening sizes, strand width, and sheet dimensions for every order.

Standard Specifications of 3/8 Expanded Metal

These specifications define the universal standard for 3/8 expanded metal used across industries. The balanced diamond opening provides excellent structural integrity while allowing light, air, and sound to pass through.

Our product matches all standard hardware store specifications, making it a perfect replacement or bulk alternative to retail products. We offer both raised (standard) and flattened finishes to meet your project needs.

While 3/8 expanded metal is a medium size, our small hole expanded metal mesh provides finer options for filtration and security applications. Full details are available on our products page.

Materials & Finishes for 3/8 Expanded Metal

We manufacture 3/8 expanded metal in three high-performance materials, each designed for specific environments, durability needs, and applications.

Hot-Dip Galvanized Steel: The most popular choice for outdoor and industrial use. It offers excellent rust resistance, high strength, and cost-effectiveness. Ideal for fencing, guards, and general fabrication.

Aluminum Alloy: Lightweight, corrosion-resistant, and non-magnetic. Perfect for indoor decorative screens, vents, RV panels, and coastal applications where rust is a concern.

Stainless Steel (304/316): Premium corrosion resistance for food processing, marine, chemical, and hygienic environments. Offers long service life and minimal maintenance.

Our hot-dip galvanized expanded metal sheet in 3/8 size provides superior outdoor performance. For extreme environments, our alloy expanded metal mesh delivers unmatched durability.

Top Applications of 3/8 Expanded Metal

3/8 expanded metal is an extremely versatile size used in nearly every industry. Its balanced opening size makes it suitable for both functional and decorative projects.

Security & Safety: Window guards, door screens, machine safety barriers, fence panels, and animal enclosures. The 3/8″ opening prevents small objects and limbs from passing through while maintaining visibility.

Ventilation & Screens: HVAC vent covers, radiator screens, air filters, speaker grilles, and fireplace screens. Provides optimal airflow while protecting internal components.

Construction & Industrial: Concrete reinforcement, walkway panels, machinery guards, storage racking, and trailer flooring. Offers reliable strength for heavy-use applications.

Architectural & Decorative: Building facades, wall panels, ceiling tiles, room dividers, and furniture accents. Our expanded metal mesh for facade decoration in 3/8 size adds modern aesthetics to commercial buildings.

DIY & Home Improvement: Garden fencing, shelf liners, tool organizers, craft projects, and gutter guards. Easy to cut, form, and install for homeowners and hobbyists.

Raised vs. Flattened 3/8 Expanded Metal

3/8 expanded metal is available in two finishes: raised (standard) and flattened. Each offers distinct performance and aesthetic characteristics for different uses.

Raised (Standard) 3/8 Expanded Metal: Retains the natural 3D diamond shape formed during expansion. Provides maximum strength, slip resistance, and rigidity. Ideal for industrial platforms, safety guards, and outdoor fencing.

Flattened 3/8 Expanded Metal: Cold-rolled to create a smooth, uniform surface. Reduces thickness and creates a sleek, modern appearance. Perfect for decorative panels, indoor screens, furniture, and architectural applications.

The flattening process slightly increases the LWD and SWD dimensions, so it is important to specify finish when ordering. Both finishes maintain the 3/8″ nominal opening size classification.

Our powder-coated expanded metal facade mesh uses flattened 3/8 expanded metal for a clean, professional finish on building exteriors.

Custom 3/8 Expanded Metal Solutions

Custom Sheet Sizes: Cut-to-size panels in any dimension, from small hobby pieces to large industrial sheets up to 1500×4000mm. Eliminates waste and on-site cutting.

Special Thicknesses: Light-gauge for decorative use and heavy-gauge for structural and load-bearing applications beyond standard stock options.

Fabrication Services: Bending, cutting, framing, and welding into finished assemblies such as guards, screens, and panels ready for installation.

Our custom expanded metal mesh service supports full customization of 3/8 expanded metal. As an experienced OEM expanded metal mesh manufacturer, we provide private-label and retail-packaged options.

Advantages of Choosing Our 3/8 Expanded Metal

Our 3/8 expanded metal stands out from standard retail and imported products due to our strict quality control, consistent manufacturing, and premium materials.

Precision Dimensional Accuracy: Tight tolerances ensure every sheet meets the 3/8″ SWD standard, guaranteeing consistency across your entire order.

Uniform Strength: One-piece construction with no welds or weak points provides reliable structural integrity for all applications.

Wholesale Pricing: Direct factory pricing saves 30–60% compared to hardware store costs for large orders and full sheets.

Global Shipping: We ship small-batch and bulk orders worldwide, with flexible packaging for retail, wholesale, and project use.

Our Anping expanded metal mesh factory uses automated production lines to ensure consistent quality for every sheet of 3/8 expanded metal we produce.