3" x 4" 2 Mil Flat Poly Bags - 5,000/Case
What fits in a 3" x 4" bag?
A 3" x 4" flat bag holds items up to about 2.5" wide and 3" long, leaving room at the top to heat-seal it. It is a good fit for small parts, jewelry, coins and samples. At 2 mil (standard weight), it is made for everyday packaging of parts, apparel and food.
Features
- Acid-free and archival safe
- 5,000 bags per case
Our 2 Mil low-density polyethylene (LDPE) flat poly bags are the go-to choice for medium-duty packaging, offering the perfect balance of strength and flexibility. Ideal for storing and protecting food, clothing, hardware parts, and general merchandise, these bags deliver reliable performance in both commercial and personal use.
- Popular 2 Mil Thickness – Strong enough for heavier items while maintaining flexibility for easy handling
- Durable Construction – Made from seamless tubing with no side seals or slits, eliminating weak points that can tear
- Convenient Dispenser Packs – Bags 36" wide and under come in packs of 100 for cleanliness and easy access
- Heat Sealable for Security – Works with standard heat sealers for a tamper-evident, airtight closure
- Food-Safe & FDA/USDA Compliant – Perfect for direct food contact
- Eco-Friendly – Made from 100% virgin raw materials and 100% recyclable
- Clear Sizing – First dimension is the bag opening; all measurements are listed in inches
Please note: These bags are open-top and do not include a reclosable zipper. Manual sealing is required.
Frequently Asked Questions
When will my order ship?
Orders placed before 1 PM Pacific on business days ship the same day from our California warehouse, and delivery usually takes 2–5 business days. Orders of $1,500 or more ship free to commercial addresses. We don't ship to Alaska, Hawaii or Puerto Rico.
How many bags come in a case, and is there a minimum order?
Each case contains 5,000 bags. There's no minimum order, and larger orders get a lower price per case; see the Volume price breaks table on this page.
What does 2 mil mean?
Mil measures film thickness: 1 mil is one-thousandth of an inch (0.001"). At 2 mil, this bag is standard weight, made for everyday packaging of parts, apparel and food. Read more in our guide, What is a Mil?
Are these bags food safe?
Yes. This product meets FDA requirements for direct food contact.
Can these go in the freezer?
They aren't recommended for storage in sub-freezing temperatures.
How do I close these bags?
They have an open top, so you can heat-seal them with an impulse sealer, close them with bag ties or tape, or tie them off.
Can I get a sample before ordering?
Yes. Click on this page and we'll send one out for a $6.99 sample shipping fee.
Can you make a custom size or thickness?
Yes. If you need a size, thickness or quantity we don't stock, send us a Custom Quote Request and we'll get back to you with pricing.
Customer Reviews
Customer Reviews
3" x 4" 2 Mil Flat Poly Bags - 5,000/Case
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