8x4x18 4 Mil Gusseted Expandable Poly Bags 500/Case
$113.26
/ case of 500$0.23 per bag
Request bulk pricing
| Quantity (case) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
In stock · ships within 1 business day from the nearest of 5 US warehouses (IL, PA, TX, GA, CA) · 1–5 business days in transit · freight calculated at checkout · free ground shipping on orders over $99 (parcel rates up to $29.95) and over $500 (up to $120)
30-day returns on stock items · Return policy
Inside dimensions
8" × 4" × 18"
Board / material
4 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 8" × 4" × 18" (L × W × H) |
|---|---|
| Board / material | 4 Mil |
| Color | Clear |
| Sold as | Case of 500 |
| Physical units per order increment | 500 (one case) |
| Case weight | 29.38 lb |
| Outer carton (shipping) | 18.75 × 9.0 × 8.5 in |
| LTL freight class | Class 60 |
| GTIN | 841436098038 |
| SKU | PB1801 |
About this item
SKU PB1801 — 8" × 4" × 18", 4 Mil, Clear. Sold as a case of 500, shipped from US warehouses.
Heavy-duty 4 mil clear polyethylene gusseted bags with expandable sides and fitted bottom, ideal for packing irregularly shaped items, food products, and merchandise.
Gusseted poly bags: Good fit for bulky, irregular, or deep items that need expandable side or bottom space. These poly bags help fulfillment, warehouse, ecommerce, and parts teams choose right-sized bags for storage, kitting, packing, and shipping workflows.
Compare nearby options
Larger, smaller and stronger options from the same family. Prices shown are current case prices; freight is calculated at checkout.
Common questions
Will a boxy or bulky item fit in this 18" H x 8" W x 4" Gusseted Sides bag?
The listed size is 18" H x 8" W x 4" Gusseted Sides — the gusseted sides fold out so the bag can open to its listed depth and sit around blockier items. The catalog lists inside-usable dimensions of 18" H x 8" W x 4" Gusseted Sides, so that measurement is what your item has to fit within.
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. This listing's material is specified as 4 Mil LDPE (Low-Density Polyethylene).
Can I swap PB1801 for the next size up or down?
Not as an exact replacement. The closest sizes in this line are 15x9x24" and 24" Length x 12" Width x 8" Gusseted Depth; any size change alters the usable interior. Before switching, match the listed dimensions, 4 mil thickness, and case count — then reorder by exact SKU PB1801.
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. This listing is sold as one case of 500 bags — roughly $0.23 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.
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Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.