7x18" 4 Mil Clear Flat Poly Bags - Heavy-Duty Protection, 1000/Case
$132.25
/ case of 1000$0.13 per bag
Request bulk pricing
Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
7" × 18"
Board / material
4 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 7" × 18" (L × W) |
|---|---|
| Board / material | 4 Mil |
| Color | Clear |
| Sold as | Case of 1000 |
| Order in multiples of | 1000 |
| Case weight | 34.2 lb |
| Outer carton (shipping) | 15.0 × 10.5 × 9.0 in |
| LTL freight class | Class 60 |
| GTIN | 841436025386 |
| SKU | PB1133 |
About this item
SKU PB1133 — 7" × 18", 4 Mil, Clear. Sold as a case of 1000, shipped from US warehouses.
4 mil flat polyethylene bags measuring 7x18 " deliver durability for shipping tools, hardware, and food products. Economical case of 1,000 bags, seal with twist ties, bag tape, or impulse sealers for complete packaging solutions.
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
What actually fits inside a 7x18" bag?
The listed size is 7x18". 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.
How does 4 mil compare with lighter or heavier film?
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 PB1133?
Not as an exact replacement. The closest sizes in this line are 6x18" and 7x20" (same 4 mil film), and the same 7x18" size is also stocked in 1 mil. Before switching, match the listed dimensions, 4 mil thickness, and case count — then reorder by exact SKU PB1133.
What do I need to seal these, and what does a full order look like? 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 1,000 bags — roughly $0.13 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 "FDA & USDA Compliance: Yes - Food-Safe & Multi-Purpose 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.