Ultimate Ballast

Big outdoor structures are rarely cut and paste — that’s why our Modular Ballast Unit is built to adapt. From outdoor roofs to line array towers, it gives you the flexibility, footprint, and weight needed for real-world rigging.

Designed to support large, heavy, and awkward truss structures, this unit’s modular layout allows you to:

• Mount 12", 16", or 20.5" truss directly to all five sides

• Stack units vertically or horizontally to increase footprint and weight

• Offset and Diamond mount 12" truss

• Bolt in arbor or XL weights to increase mass

• Attach screw jacks, leveling feet, casters, or ground stakes via the corner provisions

Specs & Weight Capacity

• Empty weight: 267 lb

• With 6” arbor weights: 654lb

• With XL weights: 875 lb

• Forklift access: Pass-through fork slots for easy transport

• Side knockouts: Allow direct connection of half couplers, cheeseboroughs, or slings

• Bolt patterns: Top and bottom holes align for stacking or bolting multiple units together

Mounting Options

• Top plate: Supports square truss (12" to 20.5") or 1.5" pipe, mounted centrally

• Edge mounting: 12" truss can be mounted offset, in all 4 corners, or bridging units.

• Diamond orientation: Supports central or offset mounting patterns

• Stacked mode: Mount 16" or 20.5" truss to the sides when using two units together

Below are videos and animations showing this unit in action — including stacking methods, weight installation, and connection techniques.

Actual product design may vary from drawings due to Ent Fab constantly trying to improve its products, if you have a specific need or question feel free to call or email us.

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