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  • Wire Mesh FAQs for Products, Costs & Shipping – TWP Inc.

Wire Mesh FAQs for Products, Costs & Shipping – TWP Inc.

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14 Product & Selection

Mesh (or mesh count) is the number of openings per linear inch, measured from the center of one wire to the center of the next. To determine mesh size, count the number of openings between the center of one wire and the center of a parallel wire one inch away. For coarse mesh, this can usually be done with a ruler. For finer meshes, a mesh counter or optical comparator may be required for accuracy. Mesh count does not account for wire diameter, which also affects opening size and... Read more
Wire mesh is made from a variety of metals, selected for strength, durability, and resistance to corrosion. The most common materials are stainless steel (especially Grades 304 and 316), galvanized steel, and carbon steel. Depending on the application, wire mesh may also be made from aluminum for its lightweight and corrosion resistance, copper for conductivity, or brass and bronze for decorative or filtration uses. For more demanding environments, specialty metals like nickel alloys or titanium are sometimes... Read more
It depends on the material and certification. Stainless steel wire mesh, especially Type 304 or 316, is commonly considered food safe and is widely used in food processing applications. However, wire mesh is not NSF compliant unless it is specifically certified by NSF. Materials such as galvanized steel, carbon steel, copper, brass, or coated meshes are generally not recommended for direct food... Read more
Wire mesh tolerances vary by material, weave type, and manufacturer, but you can generally expect small deviations in wire diameter, opening size, and overall dimensions. For most standard woven or welded mesh, common tolerances are around ±5% to ±10% for wire diameter and opening size. Woven mesh tends to be tighter and more consistent, while expanded or specialty meshes may have wider tolerances. If you need precise dimensions, ask the supplier for the specific tolerance chart for that mesh... Read more
Yes. Wire mesh can be used outdoors, but you should choose a corrosion-resistant material. Stainless steel (304 or 316) is the best option for outdoor exposure. Galvanized steel is also suitable, but the protective coating can wear over time. Carbon steel and coated meshes may rust if exposed to weather for extended periods. PTFE-coated mesh is another strong outdoor option because it resists UV, chemicals, and weathering, though the coating can still wear with heavy... Read more
Yes. TWP offers wire mesh samples for a wide range of needs, from decorative applications to DIY, construction, and industrial use. Our decorative mesh sample kits are ideal for interior designers and homeowners exploring unique styles, while our full selection of wire mesh samples allows customers to evaluate materials for performance, testing, and inspection. Samples are available in many materials, including antique brass and bronze, stainless steel, and more, so you can review textures, finishes, and functionality up close. TWP also offers wire mesh samples for testing and inspection. Most samples cost $10.00 each plus shipping and are charged to your Visa, MasterCard, American Express, or Discover at the time of shipment. Unless otherwise specified, samples ship via USPS Priority Mail. Expedited shipping is available for an additional charge. Available MaterialsSamples are available for:Galvanized steel Stainless steel (woven and welded) Brass Bronze Copper Aluminum Plain steelSample Sizes by Mesh Type8 mesh and coarser: 6" × 6" 10 mesh and finer: 3" × 3" Exception: 635 mesh samples are 1" × 1" Sintered (Thermobond™) mesh: 1" × 1" Exception: 5-layer samples are 3" × 3" for $45.00 PTFE-coated stainless steel: 1" × 1" for $10.00If you need larger sample pieces or custom sizes, please contact us for a quote. Samples can be selected from any mesh listed on our... Read more
Both woven and welded wire mesh is produced in 100 foot long (30 M) rolls. Rolls are usually either 36 inches (914mm) wide or 48 inches (1220mm) wide. We sell our mesh as either full rolls or partial rolls. The one exception is our Sintered mesh Thermobond™ that is produced as flat sheets up to 24 inches by 48 inches. Also, our cabinet decorative mesh is sold in panels up to 24 inches by 60... Read more
Yes, they can be supplied for a nominal fee. Please advise us at the time of ordering (by phone or email) if you require material certifications or other documentation. No certifications will be available more than 90 days after... Read more

Yes, many items are available as a special order.

We can offer a quotation at your request. Please contact us with your special requirements.

Read more
Our website provides detailed technical information and photos to help you identify the wire mesh you need. TWP can supply wire mesh based on a specific description or an existing sample, but we are unable to recommend a particular mesh for specialized or engineering-critical applications. If you are unsure which mesh is appropriate, you may:Purchase samples to evaluate suitability Provide a physical sample for identification Consult an engineer or technical specialist in your field for application-specific... Read more
Woven wire mesh is made by interlacing wires over and under each other, similar to weaving fabric. This construction provides flexibility and is commonly used for filtration, screening, and applications requiring precise openings. Welded wire mesh is made by placing wires in a grid pattern and welding them together at each intersection. This creates a rigid, stable mesh often used for structural, fencing, guarding, and reinforcement... Read more

Yes, please send us the sample and we will contact you with the results of our examination.

In the features section which accompanies each mesh photo, we state what is needed to cut each mesh to size (scissors, tin snips, etc.).

Thermobond™ is a trademark that applies to TWP's sintered (diffusion bonded) meshes. These meshes are used in special applications where non-fraying, bonded mesh is required.

11 Technical Definitions & Standards

Mesh count refers to the number of openings per linear inch in a wire mesh. For example, a 10 mesh has 10 openings per inch, while a 50 mesh has 50 openings per inch. A higher mesh count means smaller openings and finer filtration, while a lower mesh count means larger openings and coarser... Read more
Open area is the percentage of the mesh that is open space (not wire). It's calculated by measuring the total open space in the mesh and dividing it by the total area of the mesh, then converting that result into a percentage. A higher open area means more airflow or liquid flow, while a lower open area means more filtration and less... Read more
Wire diameter is the thickness of the wire used to make the mesh. Wire gauge is a standard way to describe that thickness. In general, a higher gauge number means thinner wire, and a lower gauge number means thicker wire. The wire diameter affects strength, stiffness, and how much open area the mesh... Read more
The most accurate way to measure mesh is to use a ruler or caliper to measure the opening size (clear space between wires) and the wire diameter. Measure several openings across the mesh and average the results, since woven mesh can vary slightly. If you need a precise measurement or want help confirming your mesh specs, TWP offers measuring services. We also provide custom, in-house laser cutting to ensure your mesh fits your exact... Read more
A micron (also called a micrometer) is a unit of length in the metric system, equal to one millionth of a meter or 0.00003937 inches. To put it in perspective, a human hair is about 50–100 microns thick. Micron measurements are commonly used in wire mesh and filtration to describe the size of the openings or the smallest particles the mesh can retain. Understanding microns helps you choose the right mesh for screening, filtration, or precision... Read more
A nominal micron rating describes the approximate size of the smallest particle a filter or mesh can retain, expressed in microns. Specifically, it represents the particle diameter that the filter captures with 60–90% efficiency, rather than guaranteeing complete removal. For example: A 10-micron nominal rating can capture most particles around 10 microns, but some may pass through. This rating helps compare mesh or filter performance for filtration, screening, or separation... Read more
A square foot is a unit of measurement of area. A piece of material measuring 12 inches by 12 inches is one square foot. To compute the number of square feet in a piece of wire mesh you multiply its width in feet times its length in feet. For example, a piece of wire mesh 4 feet wide and 3 feet long would be 12 square feet. A linear foot (sometimes called a running foot) just measures length. One linear foot equals one foot long, no matter how wide the material is. So if something is 3 feet wide and 15 feet long, it's 15 linear feet. That same piece is 45 square feet when you factor in the width (3 ×... Read more
ASTM E2016-22 is a standard that defines the requirements for industrial woven wire fabric (wire cloth) used to separate particles or screen materials. It covers properties such as wire diameter, mesh count, weave type, and tolerance, and applies to wire made from suitable metals or alloys. This standard ensures that the mesh you purchase meets consistent quality and performance expectations for industrial or laboratory applications. If you need a copy of ASTM E2016-22, it can be purchased directly from the ASTM... Read more
Sifting and sizing is generally done using a plain square weave wire mesh or a welded stainless mesh. Archeological digs have used our galvanized meshes for sifting purposes. Twilled weaves are not suitable for sizing or sifting because they do not have straight-through... Read more
An Absolute Filtration Rating specifies the particle size, in microns, that a filter or mesh can retain essentially 100% of the time. While nominal ratings measure partial retention, the absolute rating indicates the smallest particle the filter will reliably stop. In practice, manufacturers often define absolute ratings based on 98–99.999999% retention, depending on testing standards. This rating is useful when precise particle removal is critical, such as in laboratory, industrial, or high-precision filtration... Read more
A Dutch weave mesh has a unique structure where the wires are woven so that there are no straight-through square openings. Instead, the openings form narrow, triangular or tortuous pathways, causing liquids or air to follow a winding path through the mesh. This design allows Dutch weave mesh to filter fine particles more effectively than standard woven mesh while maintaining strength and stability. It is commonly used in precision filtration, chemical processing, and laboratory applications where controlled flow and particle retention are... Read more

4 Quoting & Pricing

Yes. When needed, we can provide you with a formal quote by email or fax.

TWP no longer publishes a paper catalog. Our website serves as our catalog.

Sales tax applies to orders unless:You are located outside California You are a government agency or other tax-exempt organization You provide a valid resale certificate covering the purchased goodsMake sure to provide the appropriate documentation at checkout to avoid unnecessary tax... Read more
All prices are quoted in U.S. dollars and are subject to change. The listed prices are FOB Berkeley, California USA and do not include freight charges or any applicable taxes.Standard Mesh Materials: $100 USD Wire Mesh Discs: $200 Special Shapes and Slit Widths: $200 Custom Weaving: $1500 International Orders: Same as above (if FedEx or truck... Read more

5 Ordering & Accounts

To order wire mesh online from TWP Inc., follow these steps:Go to the product page for the mesh you want and select the size. You will be able to view the pricing for your selected options. Add the item to your cart. Proceed to checkout. Enter your delivery information and choose a shipping method (ground, overnight, priority overnight, etc.). Choose your payment method (credit card, Apple Pay, Google Pay, or PayPal). Place your... Read more
Yes. In addition to online ordering, you can place an order or get help with your mesh selection by calling or emailing TWP directly. You can reach us by phone at (800) 227-1570 or (510) 548-4434, and by email at [email protected] for quotes, questions, or ordering... Read more
Yes. You can create an account online to place orders and track order history. Qualified businesses or organizations will be given Net 30 terms upon approved credit. In order to open an account with terms, please provide a bank reference and three trade references. Major credit cards are also accepted. Overseas customers may pay by credit card or bank T/T at the time of shipment. NOTE: There is a minimum order of $300.00 for issuing a purchase order. All past due accounts are subject to a 1.5% per month service charge or 18% per... Read more
Yes. TWP accepts purchase orders from businesses and organizations that meet certain requirements. There is a minimum order of $300 for issuing a purchase order, and your account may need approval if you want credit terms like Net... Read more
TWP accepts major credit cards for online and phone orders. Qualified businesses may also get Net 30 terms after credit approval. For international customers, payment can be made by credit card or bank wire transfer (T/T) at the time of shipment. Individuals placing orders are generally asked to pay by credit... Read more

11 Shipping & Delivery

TWP typically processes and ships orders quickly once they're ready, but delivery time depends on the shipping method you choose and your location. Smaller orders usually ship via FedEx and larger orders by freight carrier after processing at the Berkeley, California facility. Transit time after shipment varies based on the carrier service and destination. TWP does not guarantee exact delivery dates and cannot refund shipping for late... Read more
Yes. In addition to standard shipping options, TWP can accommodate expedited shipping requests such as faster parcel services or priority carrier options when available. If you need your order sooner than standard transit times allow, contact TWP by phone or email to discuss expedited options and any additional charges that may... Read more
When your order arrives, inspect the shipment immediately. If you see any external damage, accept it only after the carrier notes the damage on the delivery receipt. Then request an inspection by the carrier. If you find damage or shortage after opening, you must also request a carrier inspection within 15 days of delivery to preserve your right to file a... Read more
A lift-gate is a device used to raise and lower items from ground level to the level of a tractor trailer. Freight companies deliver items on a tractor trailer which is approx 56 inches above the ground. These trailers are designed to load and unload at a loading dock or with a fork-lift. If your delivery location does not have a loading dock or fork-lift then you need a lift-gate. *Orders that are incorrectly processed with commercial address delivery to a location that does not meet the criteria for a commercial address as determined by the freight carrier may be subject to additional delivery... Read more
Orders with multiple items or rolls weighing less than 150 lbs each can be shipped in separate boxes via FedEx Parcel. In these cases, both FedEx Parcel and LTL freight options will appear at checkout. Your shipping cost may vary depending on whether your address is residential or commercial, and one option (FedEx Ground or LTL Truck) may be more cost-effective than the... Read more
All of the following are considered residential addresses:A home or private residence Business operating out of a home Business that does not have a loading dock or fork-lift to unload the freight shipment and requires liftgate serviceA residential delivery includes liftgate service. *Orders that are incorrectly processed with commercial address delivery to a location that does not meet the criteria for a commercial address as determined by the freight carrier will be subject to additional delivery... Read more
Commercial addresses are those defined by the freight carrier as commercial sites. Typically these addresses are zoned as commercial real estate. Commercial address delivery charge does not include liftgate service; the destination address must either have a loading dock, or a fork-lift to unload the shipment. Please note: The fact that a business is being operated from a location does not qualify it as a commercial address. Any business being operated from a home, apartment, or other dwelling where people live on the premises is considered to be a residential address. *Orders that are incorrectly processed with commercial address delivery to a location that does not meet the criteria for a commercial address as determined by the freight carrier will be subject to additional delivery... Read more
We usually ship using FedEx for shipping packages up to 150 lbs. For shipments of items over 150 lbs we use Old Dominion for delivery to residential addresses, and FedEx Freight for delivery to commercial addresses. We have daily FedEx and UPS pickups. See explanations below for each shipping option. Note: Business days are Monday – Friday. FedEx Parcel (for packages less than 150 lbs). Can be shipped to both residential and commercial addresses.Ground – transit time 5-7 business days (depending on location) Express Saver – transit time 3 business days 2 Day – transit time 2 business days Standard Overnight – Next business day delivery to most U.S. cities by 3:00 pm Priority Overnight – Next business day delivery to most U.S. cities by 10:30 amIn Store Pick Up:Pick up at TWP location at 2831 10th St. Berkeley, CA 94710. If this option is selected, we will notify you by phone or email when your order is ready for pickup.Use My Shipping Account:If you have a UPS or FedEx account that you would like us to bill for the shipping charges. You will be prompted to select the shipping method, shipping service, and enter your account number on the first page of the checkout.LTL Truck Commercial Address:Shipping via FedEx Freight for items over 150 lbs shipping to a commercial address only (does not include liftgate service).LTL Truck Residential Address:Shipping via Old Dominion for items over 150 lbs shipping to a residential address (includes liftgate service).USPS (for samples only):Priority Mail – 1 to 3 business days within the... Read more

It's possible, but we must get your order no later than 10:00 am Pacific Time. Please contact our office if you have any urgent requirements or questions regarding delivery and processing times.

Read more

Your orders will ship out of Berkeley, California 94710.

Yes. TWP offers "Blind Ship" services where meshes and packaging are labeled generically so your customer won't see TWP as the source. Please indicate if you require this service at the time of order. Extra charges may... Read more

1 International Orders

TWP regularly ships orders internationally, including to Canada. Shipping & Pricing:All listed prices are FOB Berkeley, California, USA For large shipments, TWP can provide quotes for CIF or FOB destination, priced in US dollars The website can only calculate shipping options for the US and Canada; any other freight charges displayed are errorsPayment & Fees:Payments must be made in US funds in advance, unless other arrangements are agreed upon The buyer is responsible for all brokerage fees, taxes, and duties Accepted payment methods: Visa, Mastercard, American Express, Discover, Bank Transfer, and... Read more

3 Returns, Cancellations & Changes

Orders may be canceled or changed before they are processed or shipped, but once an order is in process (especially custom or cut mesh), it cannot be canceled or altered without approval from TWP. Custom mesh that has already entered production typically cannot be canceled. If you need to cancel or modify an order, contact TWP as soon as possible to check whether it can be... Read more
Yes. TWP guarantees the quality of our mesh, but please inspect materials before cutting. If quality is disputed, wire cloth may be returned in the original delivered condition (unprocessed and unused) and packaged to prevent damage. All returns must be authorized by TWP, may be subject to a restocking charge, and are subject to inspection before credit is issued. Returns must be made within 30 days of receipt. Samples cannot be... Read more

Wire mesh that has been cut or altered, or custom discs/parts cannot be returned.

1 Special Applications (RFI Shielding Information)

TWP does not provide RFI shielding engineering services. Please consult an engineer in this field.

8 About TWP, Inc.

TWP has been in business since 1969. We are headquartered in Berkeley, California, USA, which is in the San Francisco Bay Area.

Normal business hours are 8:00 am to 4:00 pm Pacific Time Monday through Thursday and 8:00 am to 3:30 pm Pacific Time on Friday. We also have 24/7 fax, email, and voicemail services.

TWP serves a wide range of customers, from small businesses and individual end users to large corporations and Fortune 500 companies. We accommodate both small and large orders, ensuring that customers of all sizes can access our... Read more

Sí. Contamos con varios empleados bilingües que pueden atender llamadas, correos electrónicos y faxes en español para su conveniencia.

No. TWP sells directly without using distributors.

TWP is not a storefront. Please contact us for an appointment if you would like to walk-in.

TWP's DUNS number is 071689244.

Yes, our cage code number is: 0YV55

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