8x4x21 1 Mil Gusseted Expandable Poly Bags 1000/Case PB1381
$85.61
/ case of 1000$0.09 per bag
Secure checkout
Try a free sample first
Check the fit and feel before buying in bulk.
| Quantity (case) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
Shipping & deliveryCheck cost to your ZIP code
Shipping & returns details
Ships from U.S. warehouses. 30-day returns on unopened stock items.
Shipping cost and timing depend on the product, quantity and destination. Parcel or freight service is used as appropriate. Shipping discounts apply only to qualifying orders and rates.
Standard delivery is to street addresses in the contiguous U.S. Eligible returns must be unused and in original packaging; return shipping may apply.
Need a hand? Talk to our team
Inside dimensions
8" × 4" × 21"
Board / material
1 Mil
Color
Clear
Freight class
Class 60
From our customers
“The packaging is sturdy, well-made, and looks professional. We’re really pleased with the quality.”
“They helped us choose the right packaging for our products and made ordering easy.”
“Ordering was easy, everything arrived as described, and we’ll definitely order again.”
Questions before you order?Talk to us
Specifications
| Inside dimensions | 8" × 4" × 21" (L × W × H) |
|---|---|
| Board / material | 1 Mil |
| Color | Clear |
| Sold as | Case of 1000 |
| Physical units per order increment | 1000 (one case) |
| Case weight | 17.18 lb |
| Outer carton (shipping) | 12.0 × 9.0 × 8.75 in |
| LTL freight class | Class 60 |
| SKU | PB1381 |
About this item
SKU PB1381 — 8" × 4" × 21", 1 Mil, Clear. Sold as a case of 1000, shipped from US warehouses.
8x4x21 1 mil gusseted expandable poly bags 1000 per case. Ship small parts, organize hardware, and protect items from dust and moisture. Film thickness 1 mil. Gusseted sides expand around bulky contents. 1 mil is the lighter film here; a 2 mil version is a separate listing. Also known as plastic bags or poly bags. Sold 1,000 per case (one case = 1,000 bags).
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
How should I judge fit for the 8x4x21" size?
The listed size is 8x4x21" — 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 21" H x 8" W x 4" Gusseted Depth, so that measurement is what your item has to fit within.
What does 1 mil film mean in practice?
A mil is one-thousandth of an inch, so 1 mil film is 1/1000" 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 1 Mil LDPE Polyethylene.
Can I swap PB1381 for the next size up or down?
Not as an exact replacement. The closest sizes in this line are 5x4x24" and 10x4x20" (same 1 mil film), and the same 8x4x21" size is also stocked in 1.5 mil. Before switching, match the listed dimensions, 1 mil thickness, and case count — then reorder by exact SKU PB1381.
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 1,000 bags — roughly $0.086 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.
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.