12x20 4 Mil Clear Reclosable Poly Bags 500/Case PB3791
$160.46
/ case of 500$0.32 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" × 20"
Board / material
4 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 12" × 20" (L × W) |
|---|---|
| Board / material | 4 Mil |
| Color | Clear |
| Sold as | Case of 500 |
| Order in multiples of | 500 |
| Case weight | 31.42 lb |
| Outer carton (shipping) | 13.0 × 13.0 × 12.0 in |
| LTL freight class | Class 60 |
| SKU | PB3791 |
About this item
SKU PB3791 — 12" × 20", 4 Mil, Clear. Sold as a case of 500, shipped from US warehouses.
12x20" clear reclosable poly bags in 4 mil polyethylene, a heavy-duty film for parts, hardware, and bulk contents. Packed 500 per case (SKU PB3791); this is a second listing of the same BOX case stock at the same price.
Open-top reclosable design: seal with twist ties, bag tape, or an impulse sealer (sold separately). Keeps parts, hardware, and products visible while protecting them from dust and moisture. Order by the case of 500.
Common questions
How do I know if my item fits the 12x20" size?
The listed size is 12x20". 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.
Is 4 mil the right thickness for my use?
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 4 Mil LDPE (Low-Density Polyethylene).
Is there a drop-in substitute for PB3791?
Not as an exact replacement. The closest sizes in this line are 12x15" and 14" W x 20" H; any size change alters the usable interior. Before switching, match the listed dimensions, 4 mil thickness, and closure type — then reorder by exact SKU PB3791.
How do these bags close, and how are they shipped?
The closure is listed as Full-Width Single Track Zipper, so the bag closes without separate tape or heat. 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.