20x30 4 Mil Flat Poly Bags on Roll
$191.06
/ roll
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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
20" × 30"
Board / material
4 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 20" × 30" (L × W) |
|---|---|
| Board / material | 4 Mil |
| Color | Clear |
| Order in multiples of | 1 |
| Roll weight | 33.57 lb |
| Outer carton (shipping) | 21.0 × 14.5 × 6.5 in |
| LTL freight class | Class 60 |
| GTIN | 848109087221 |
| SKU | PB6850 |
About this item
SKU PB6850 — 20" × 30", 4 Mil, Clear.
Clear 20 x 30" flat poly bags on a roll in 4 mil. Industry standard core makes these bags 100% compatible with all automatic packaging equipment. Sold by the roll.
Flat poly bags: Good fit for bulk storage, product protection, clear inventory handling, fulfillment packing, and 4 mil packaging workflows. These poly bags help fulfillment, warehouse, ecommerce, and parts teams choose right-sized bags for storage, kitting, packing, and shipping workflows.
Common questions
How much usable room does the 20x30" size really have?
The listed size is 20x30". 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 Low-Density Polyethylene (LDPE).
Is there a drop-in substitute for PB6850?
Not as an exact replacement. The closest sizes in this line are 16x28" and 28x40"; any size change alters the usable interior. Before switching, match the listed dimensions and 4 mil thickness — then reorder by exact SKU PB6850.
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. 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.