18x18" 6 Mil Reclosable Poly Bags - Moisture Resistant, Case of 250
$189.74
/ case of 250$0.76 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
6 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 18" × 18" (L × W) |
|---|---|
| Board / material | 6 Mil |
| Color | Clear |
| Sold as | Case of 250 |
| Order in multiples of | 250 |
| Case weight | 36.98 lb |
| Outer carton (shipping) | 20.0 × 19.5 × 5.75 in |
| LTL freight class | Class 60 |
| GTIN | 841436092692 |
| SKU | PB3903 |
About this item
SKU PB3903 — 18" × 18", 6 Mil, Clear. Sold as a case of 250, shipped from US warehouses.
18x18 " reclosable poly bags featuring a full-width single-track zipper that keeps products protected from moisture and contamination. Heavy-duty 6 mil polyethylene construction offers puncture resistance and durability for demanding applications.
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.
Common questions
How do I know if my item fits the 18x18" size?
The listed size is 18x18". The catalog lists inside-usable dimensions of 18" x 18", so that measurement is what your item has to fit within.
What does 6 mil film mean in practice?
A mil is one-thousandth of an inch, so 6 mil film is 6/1000" 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 6 Mil Low-Density Polyethylene (LDPE).
Is there a drop-in substitute for PB3903?
Not as an exact replacement. The closest sizes in this line are 16x18" and 18x20"; any size change alters the usable interior. Before switching, match the listed dimensions, 6 mil thickness, closure type, and case count — then reorder by exact SKU PB3903.
How does the closure work, and what does a full order look like?
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 250 bags — roughly $0.76 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.