18x18" 3.1 Mil Reclosable Static Shielding Bags - ESD Protection, Case of 100
$143.35
/ case of 100$1.43 per bag
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
18" × 18"
Board / material
3.1 Mil
Color
Transparent
Freight class
Class 60
Specifications
| Inside dimensions | 18" × 18" (L × W) |
|---|---|
| Board / material | 3.1 Mil |
| Color | Transparent |
| Sold as | Case of 100 |
| Order in multiples of | 100 |
| Case weight | 9.38 lb |
| Outer carton (shipping) | 26.75 × 19.5 × 2.5 in |
| LTL freight class | Class 60 |
| GTIN | 51111778050 |
| SKU | STC370 |
About this item
SKU STC370 — 18" × 18", 3.1 Mil, Transparent. Sold as a case of 100, shipped from US warehouses.
Protect sensitive electronics with these 18x18 " reclosable static shielding bags featuring multi-layer Faraday protection and ziplock seal. 3.1 mil transparent material with ESD warning symbol printed. Sold by the case of 100 bags for cost-efficient bulk protection.
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.
Common questions
How do I know if my item fits the 18x18" size?
The listed size is 18x18". 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.
How does 3.1 mil compare with lighter or heavier film?
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 Static Shielding Polymer.
Is there a drop-in substitute for STC370?
Not as an exact replacement. The closest sizes in this line are 15x18" and 18x24"; any size change alters the usable interior. Before switching, match the listed dimensions, 3.1 mil thickness, closure type, and case count — then reorder by exact SKU STC370.
Do these bags reseal, and how do they arrive?
The closure is listed as Reclosable Zip-Top, so the bag closes without separate tape or heat. This listing is sold as one case of 100 bags — roughly $1.43 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.
Order support
Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.