18x20 3.1 Mil ESD Static Shielding Bags 100/Case
$125.28
/ case of 100$1.25 per bag
Request bulk pricing
| Quantity (case) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
In stock · ships within 1 business day from the nearest of 5 US warehouses (IL, PA, TX, GA, CA) · 1–5 business days in transit · freight calculated at checkout · free ground shipping on orders over $99 (parcel rates up to $29.95) and over $500 (up to $120)
30-day returns on stock items · Return policy
Inside dimensions
18" × 20"
Board / material
3.1 Mil
Color
Transparent
Freight class
Class 60
Specifications
| Inside dimensions | 18" × 20" (L × W) |
|---|---|
| Board / material | 3.1 Mil |
| Color | Transparent |
| Sold as | Case of 100 |
| Physical units per order increment | 100 (one case) |
| Case weight | 9.58 lb |
| Outer carton (shipping) | 27.0 × 19.5 × 2.25 in |
| LTL freight class | Class 60 |
| GTIN | 00051111796092 |
| SKU | STC197 |
About this item
SKU STC197 — 18" × 20", 3.1 Mil, Transparent. Sold as a case of 100, shipped from US warehouses.
Protect sensitive electronics with these 18x20 " transparent static shielding bags featuring multi-layer Faraday protection and ESD warning symbols. Heat-sealable design with 3.1 mil material thickness provides reliable electrostatic discharge protection. Sold as a case of 100 units for cost-efficient bulk purchasing.
Anti-static poly bags: Good fit for electronics, circuit boards, components, parts kitting, and static-sensitive warehouse inventory. These poly bags help fulfillment, warehouse, ecommerce, and parts teams choose right-sized bags for storage, kitting, packing, and shipping workflows.
Compare nearby options
Larger, smaller and stronger options from the same family. Prices shown are current case prices; freight is calculated at checkout.
Common questions
How much usable room does the 18x20" size really have?
The listed size is 18x20". Plan for contents slightly smaller than the nominal size — the usable interior runs a bit under the listed measurement once the bag takes shape around what you load into it.
What does 3.1 mil film mean in practice?
A mil is one-thousandth of an inch, so 3.1 mil film is 3.1/1000" thick — 4 mil film, for example, is twice the film thickness of 2 mil. Heavier film of the same material stands up to punctures and rough handling better; lighter film costs less per bag and packs tighter. This listing's material is specified as 3.1 Mil Multi-Layer Polyethylene with Static-Dissipative Properties.
Can a nearby size or thickness replace STC197?
Not as an exact replacement. The closest sizes in this line are 18x18" and 20x20"; any size change alters the usable interior. Before switching, match the listed dimensions, 3.1 mil thickness, and case count — then reorder by exact SKU STC197.
What do I need to seal these, and what does a full order look like?
These are open-top bags — close them with a heat sealer, bag tape, twist ties, or staples, whichever fits your workflow. This listing is sold as one case of 100 bags — roughly $1.25 per bag at the current case price (confirm the live price before ordering). Orders ship from Packrift's five US warehouse regions (Central IL, NE PA, S TX, SE GA, and W CA); delivery options and timing are shown at checkout.
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Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.