18x30 Flat Poly Bags - Heavy Duty 3 Mil Protection for Large Format Items
These 18x30 flat poly bags deliver heavy-duty 3 mil thickness for protecting oversized documents, prints, and flat goods. The generous dimensions accommodate architectural blueprints, large-format art prints, posters, maps, and other items requiring reliable flat storage and transport. Made from 100% virgin LDPE resin, these bags combine puncture resistance with crystal clarity.
Product Specifications
- Dimensions: 18" x 30" flat
- Material: Low-Density Polyethylene (LDPE)
- Thickness: 3 mil (0.003" / 76 micron) - Heavy Duty
- Quantity: 250 bags per case
- Construction: 100% virgin resin
- Compliance: FDA compliant for food contact
- Origin: Made in USA
Commercial Applications
The 18x30 dimension paired with 3 mil thickness serves demanding commercial applications across multiple industries:
- Architecture & Engineering: Protect blueprints, CAD drawings, and technical plans during storage and transport
- Art & Photography: Store large prints, posters, lithographs, and photography without creasing or moisture damage
- Print & Publishing: Package oversized calendars, maps, charts, and promotional materials
- Retail & E-commerce: Ship flat textiles, large garment items, blankets, and bedding components
- Manufacturing: Protect large flat parts, panels, and sheet materials from dust and scratches
Key Features
- 3 Mil Heavy Duty: Over three times the impact strength of standard poly bags - handles sharp corners and rough handling
- Superior Clarity: Crystal clear LDPE allows visual identification without opening
- Moisture Barrier: Protects contents from humidity, dust, and environmental contamination
- Heat Sealable: Create tamper-evident closures or extend freshness for applicable products
- Lay-Flat Design: Stores compactly and dispenses easily from case
Thickness Guide
At 3 mil, these bags are classified as heavy duty - ideal for items with sharp edges, significant weight, or extended storage requirements. The extra thickness provides puncture resistance that lighter-gauge bags cannot match, making them suitable for architectural drawings with metal grommets, framed print protection, and industrial applications.
Why Choose Prism Pak
Prism Pak Brand bags are engineered to exceed standard polyethylene performance with twice the tensile strength of conventional LDPE bags. In stock at our Pennsylvania warehouse for fast shipment to commercial operations nationwide.
