12x18 4 Mil Reclosable FDA Poly Bags 500/Case
$156.12
/ case of 500$0.31 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
12" × 18"
Board / material
4 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 12" × 18" (L × W) |
|---|---|
| Board / material | 4 Mil |
| Color | Clear |
| Sold as | Case of 500 |
| Order in multiples of | 500 |
| Case weight | 32.5 lb |
| Outer carton (shipping) | 12.75 × 12.25 × 11.0 in |
| LTL freight class | Class 60 |
| GTIN | 841436091954 |
| SKU | PB3789 |
About this item
SKU PB3789 — 12" × 18", 4 Mil, Clear. Sold as a case of 500, shipped from US warehouses.
The 12 x 18" 4 Mil reclosable poly bag is for parts, samples, documents, kits, hardware, and small inventory that needs repeated access. Listed dimensions are 12 x 18"; bag details include 4 Mil, reclosable; sold by the case; listed weight 32.5 lb. Use the 12 x 18" bag size as a parts bag, inner poly envelope, kitting bag, apparel bag, or lightweight e-commerce bag when the contents fit the listed thickness.
Reclosable poly bags: Good fit for parts, samples, documents, apparel accessories, small kits, and inventory that needs a resealable closure. These poly bags help fulfillment, warehouse, ecommerce, and parts teams choose right-sized bags for storage, kitting, packing, and shipping workflows.
This listing is one specification only: 12x18" 4 Mil Reclosable Poly Bags, FDA Compliant, Case of 500. Packrift publishes no color options for this product; it is one product, not a white color range.
Common questions
What actually fits inside a 12x18" bag?
The listed size is 12x18". The catalog lists inside-usable dimensions of 12" W x 18" H, so that measurement is what your item has to fit within.
What does 4 mil film mean in practice?
A mil is one-thousandth of an inch, so 4 mil film is 4/1000" 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 LDPE (Low-Density Polyethylene), 4 Mil Thickness.
Can I swap PB3789 for the next size up or down?
Not as an exact replacement. The closest sizes in this line are 12x16" and 13x18" (same 4 mil film), and the same 12x18" size is also stocked in 2 and 6 mil. Before switching, match the listed dimensions, 4 mil thickness, closure type, and case count — then reorder by exact SKU PB3789.
How does the closure work, and what does a full order look like? And can I use them for food?
The closure is listed as Full-Width Single-Track Zipper, so the bag closes without separate tape or heat. This listing is sold as one case of 500 bags — roughly $0.31 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. On food use: the film is LDPE (Low-Density Polyethylene), 4 Mil Thickness, a material commonly used in food packaging, but food-contact compliance is certified per product lot. Check the spec sheet or contact us for documentation before direct food contact.
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.