18x20 3 Mil Reclosable Slide-Seal Poly Bags
$121.11
/ case
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
18" × 20"
Board / material
3 Mil
Color
Clear
Freight class
Class 60
Specifications
| Inside dimensions | 18" × 20" (L × W) |
|---|---|
| Board / material | 3 Mil |
| Color | Clear |
| Case weight | 10.02 lb |
| Outer carton (shipping) | 19.25 × 15.0 × 4.5 in |
| LTL freight class | Class 60 |
| GTIN | 848109087276 |
| SKU | PB40790 |
About this item
SKU PB40790 — 18" × 20", 3 Mil, Clear.
Clear 18 x 20" 3 mil slide-seal reclosable poly bags. The slider closure is fast and easy to use, even with gloved hands. Sold by the case.
Reclosable poly bags: Good fit for parts, samples, documents, apparel accessories, small kits, and inventory that needs a resealable closure. 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.
Larger size
20x20 3 Mil Reclosable Slide-Seal Poly Bags 100/Case
$69.38
Smaller size
16x16 3 Mil Reclosable Slide-Seal Poly Bags 100/Case PB5244
$56.67
Stronger option
18x20 4 Mil Reclosable FDA USDA Poly Bags 500/Case
$235.98
Same size, different spec
18x20 2 Mil Reclosable White Block Poly Bags 500/Case
$172.06
Common questions
How much usable room does the 18x20" size really have?
The listed size is 18x20". 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 3 mil compare with lighter or heavier film?
A mil is one-thousandth of an inch, so 3 mil film is 3/1000" 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 3 Mil Low-Density Polyethylene (LDPE).
Can a nearby size or thickness replace PB40790?
Not as an exact replacement. The closest sizes in this line are 16x18" and 20x20" (same 3 mil film), and the same 18x20" size is also stocked in 4 and 6 mil. Before switching, match the listed dimensions, 3 mil thickness, and closure type — then reorder by exact SKU PB40790.
Do these bags reseal, and how do they arrive?
The closure is listed as Slide-Seal Zipper, so the bag closes without separate tape or heat. 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.