9x12 Heavy Duty Poly Bags - Extra-Thick 3 Mil Protection
When you need serious protection for parts, hardware, or valuable items, these 9x12 heavy duty poly bags deliver. At 3 mil thick, these clear poly bags provide the extra durability that standard bags can't match — perfect for sharp-edged components, metal parts, or anything that needs puncture resistance during storage and shipping.
Specs: 9 x 12" | 3 mil | 100% Virgin LDPE | 1000/case | FDA food-contact compliant
Key Features
- Extra-Thick 3 Mil Construction: More than double the thickness of standard bags for superior puncture and tear resistance — handles heavy parts and sharp edges with ease
- Crystal-Clear Visibility: Instantly identify contents without opening, perfect for inventory management and quick parts picking
- 100% Virgin LDPE: Made from pure low-density polyethylene for consistent quality, strength, and clarity batch after batch
- Flat Open-Top Design: Easy loading for parts, documents, and components — heat seal, tape, or fold closed to suit your workflow
- FDA Food-Contact Compliant: Meets FDA/USDA specifications for food packaging, giving you flexibility for any application
Applications
- Parts & Hardware: Machine components, fasteners, brackets, hinges, electrical parts — anything with edges that might puncture thinner bags
- Warehousing & Inventory: Organize stock rooms, kit assembly components, and protect items during storage
- Shipping & Fulfillment: Inner bags for e-commerce orders, protective layer for fragile items, moisture barrier during transit
- Craft & Small Business: Etsy sellers packaging heavier items, craft fair vendors with jewelry or metal goods, anyone needing professional protection
Common Questions
Q: How thick is 3 mil compared to regular poly bags?
A: Standard poly bags are typically 1-2 mil. At 3 mil, these bags are 50-200% thicker — noticeably more substantial in hand and far more resistant to punctures, tears, and rough handling. They're the go-to choice for parts with sharp edges or heavier items.
Q: Can I heat seal these bags?
A: Yes! LDPE poly bags seal beautifully with standard heat sealers. The 3 mil thickness creates a strong, reliable seal. You can also fold and tape, use twist ties, or close with bag clips depending on your needs.
Q: What size items fit in a 9x12 bag?
A: A 9x12 bag comfortably holds letter-size documents, tablets, small apparel items, parts kits, hardware assortments, and components up to roughly 8x11 inches with room for a secure closure at the top.
Why Choose Cellobags.com
For over 40 years, we've helped businesses of all sizes find the right packaging at prices that protect your margins. Most orders ship within 24 hours, so you're never left waiting when you need to get product out the door.
