FIBC Size & Specification Guide
Everything you need to know about bulk bag dimensions, configurations, and ratings.
FIBC Anatomy
Standard Size Chart
| Size | Dimensions (Imperial) | Dimensions (Metric) | SWL | Volume | Typical Use |
|---|---|---|---|---|---|
| Small | 30"×30"×36" | 76×76×91 cm | 500 kg | 0.53 m³ | Light powders, small volume |
| Standard | 35"×35"×42" | 89×89×107 cm | 1,000 kg | 0.85 m³ | General purpose, most popular |
| Medium | 35"×35"×50" | 89×89×127 cm | 1,000 kg | 1.01 m³ | Agricultural, construction |
| Large | 37"×37"×55" | 94×94×140 cm | 1,500 kg | 1.23 m³ | Mining, heavy materials |
| Extra Large | 41"×41"×55" | 104×104×140 cm | 2,000 kg | 1.51 m³ | Maximum capacity operations |
Top (Inlet) Configurations
Open Top
Full opening for easy filling. Best for manual or conveyor loading.
Duffle Top
Flap closure with tie strings. Protects contents from contamination.
Spout Top
Cylindrical inlet for controlled filling. Best for automated lines.
Skirt Top
Overlapping fabric panels. Dust containment with easy access.
Bottom (Discharge) Configurations
Flat Bottom
Sewn-shut bottom. Single-use, cost-effective for non-discharge applications.
Discharge Spout
Controlled release spout. Essential for hoppers and processing lines.
Full Bottom Opening
Complete bottom panel opens for rapid discharge. High-volume operations.
Lift Loop Configurations
4-Point Cross Corner
Standard configuration. Loops at each corner for forklift or crane.
2-Point Tunnel Lift
Two parallel loops. For specific forklift configurations.
Single Loop (Stevedore)
One continuous loop across the top. Maritime and crane lifting.
Safety Factor Explained
5:1 Safety Factor (Standard)
Designed for single-trip use. The bag can hold 5× its rated SWL before failure. Most common for standard industrial applications.
6:1 Safety Factor (Multi-Trip)
Designed for reusable applications. Higher safety margin for bags that will be filled, emptied, and refilled multiple times.