42x40" 4 Mil Clear Flat Poly Bags - Heavy-Duty Protection, Case of 100
$170.98
/ case of 100$1.71 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
42" × 40"
Board / material
4 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 42" × 40" (L × W) |
|---|---|
| Board / material | 4 Mil |
| Color | Clear |
| Sold as | Case of 100 |
| Order in multiples of | 100 |
| Case weight | 39.1 lb |
| Outer carton (shipping) | 25.25 × 15.25 × 5.0 in |
| LTL freight class | Class 60 |
| GTIN | 841436026727 |
| SKU | PB1324 |
About this item
SKU PB1324 — 42" × 40", 4 Mil, Clear. Sold as a case of 100, shipped from US warehouses.
Protect your heavy-duty products with these 42x40 " 4 mil clear flat poly bags manufactured from 100% virgin polyethylene film. Easily seal with twist ties, bag tape, or impulse sealers for secure, professional packaging.
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 42x40" size really have?
The listed size is 42x40". 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.
Is there a drop-in substitute for PB1324?
Not as an exact replacement. The closest sizes in this line are 36" x 36" and 44x48"; any size change alters the usable interior. Before switching, match the listed dimensions, 4 mil thickness, and case count — then reorder by exact SKU PB1324.
How do I close these bags, and how do they ship? And can I use them for food?
These are open-top bags — close them with a heat sealer, bag tape, twist ties, or staples, whichever fits your workflow. This listing is sold as one case of 100 bags — roughly $1.71 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: poly film like this is commonly used in food packaging, and the manufacturer spec sheet for this item lists "Regulatory Compliance: FDA and USDA Approved". Food-contact compliance is still certified per product lot, so check the spec sheet or contact us for lot 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.