The Professional's Choice.

The Volu-Matic® 300, formerly the Volu-Matic® III, is the perfect machine for attic, closed sidewall, and netted cavity insulation installation. Professional contractors value its higher product delivery rates: an innovative air control system allows you to adjust the volume of air without decreasing the pressure. A rugged drive system with two oversized gearboxes and two heavy-duty electric clutches mean less downtime and longer equipment life.

An electric version is also available for in-plant applications, such as the research and quality control departments of major insulation manufacturers, where it’s utilized to test the blowing performance of loose fill products.

Since 1999, the respected Unisul brand of high-performance insulation machines has been part of the Machine Works portfolio. Today, Unisul is fully integrated. You may notice a new look and a streamlined lineup, but the machines’ quality and performance are still top-notch, as is the technical support that helps keep them running for decades.  

Key Features:

Gas, Diesel, PTO, or Electric power (electric model is provided by two electric motors)
Fully sealed blow-through air-lock feeder
Positive displacement blower
Four-speed transmission
Material control slide
Heavy-duty gearboxes
Automatic backflow check valve
Automatic pressure relief valve
Electrical overload protection
Mechanical overload protection
Self-aligning sealed bearings
Adjustable drive belts
Wired remote control
Integrated safety features
Air volume control systems
Heavy-duty clutches
Wireless remote control
Quick-change seal system
Built-in water pump
Hopper extensions

Feature Details:

Fully Sealed Blow - Through Air-Lock Feeder – Provides installer with a consistent flow of conditioned fiber.

Air Volume Control System - Adjustable air pressure and air flow control with panel-mounted display gauge.

Four-Speed Transmission - Operator-selected speed control for various materials and applications. Allows additional control of air-to-material ratio. 

Material Control Slide - Secondary volume and conditioning control. Allows operator to adjust fiber flow to the shredder.

Mechanical Overload Protection - Protects internal hopper components and air-lock feeder from foreign objects.  

Wired Remote Control - Gives installer the option of selecting Air Only or Air and Fiber from the point of application. 

Powder-Coat Finish – Durable, long-life protection for your investment. 

Integrated Safety Features - Front, rear, and side guards surround all moving parts. In addition, an electrical interlock disables the drive mechanism when the front safety guard is opened. Easily accessible Emergency Stop switches are standard.  

Self-Aligning Sealed Bearings – Sealed, high-quality bearings keep out dust and are equipped with Zerk fittings for proper maintenance.  

Adjustable Drive Belts – Maximize belt life with flexibility to adjust tension.  


Technical Information

Available Drive Systems
Gasoline and Diesel Motors
o 23.5 HP carburated gasoline
o 26.5 HP EFI gasoline
o 23.7 HP diesel 
Electric Motors – 240V, 480V and 600V
Typical Feed Rates*
Fiberglass - 25-35 lbs. (11.3-15.9 kg)/min.
Stone Wool - 35-55 lbs. (15.9-25.0 kg)/min.
Cellulose - 70-80 lbs. (31.7-36.1 kg)/min.
     *For correct product coverage. These rates possible with up to 250 feet of 4" ID hose.
Load height: 60" (152 cm)
Height: 72" (183 cm)
Depth: 56.5" (144 cm)
Width: 79.5" (202 cm)
Weight: 1900 lbs. (862 kg)