Pro-Dolly™ HD4

Pro-Dolly HD4 — Heavy-Duty Material Handling Dolly Built for Superior Stability Over Rough Terrain

The Pro-Dolly™ HD4 is a professional-grade material handling dolly engineered for transporting heavy stone and slab materials up to 1,200 lbs per unit, or 2,400 lbs when deployed in pairs. Designed for contractors and stone fabrication professionals who work across uneven or all-terrain job sites, the HD4 features an anodized aluminum framework, machined billet aluminum handles, and 9" closed-cell polyurethane flat-free tires for reliable performance on rough surfaces. Its integrated clamping system with a 4.5-inch maximum opening accommodates a wide range of slab thicknesses, making it a versatile solution for countertop, tile, and stone installation crews.

Technical Specifications

Pro-Dolly™ Model Comparison

Compared to the HD3, the Pro-Dolly™ HD4 offers a significantly wider clamping range of 4.5 inches versus 3 inches, making it the preferred choice when handling thicker slabs or materials with greater edge variation. The HD4's heavier-duty construction adds 8 lbs over the HD3 but delivers superior stability over rough terrain, which is critical on active job sites where surface conditions are unpredictable.

Key Features & Benefits

Integrated Clamping System

The HD4's built-in clamp with a 114.3 mm (4.5") maximum opening secures slabs and stone panels firmly during transport, reducing the risk of shifting or dropping. The machined billet aluminum tightening handle provides precise, reliable clamping force without the need for separate tools.

Anodized Aluminum Framework

The anodized aluminum frame delivers a high strength-to-weight ratio, keeping the dolly manageable at 37 lbs while supporting loads up to 1,200 lbs. Anodizing provides corrosion resistance, extending the service life of the dolly in wet or outdoor job site environments.

9" Flat-Free Closed-Cell Polyurethane Tires

The large-diameter, closed-cell polyurethane tires are designed for all-terrain use, rolling smoothly over rough, uneven, or debris-covered surfaces without going flat. The non-marking compound protects finished floors and surfaces during interior installation work.

Machined Billet Aluminum Carrying Handle

The integrated carrying handle allows a single operator to lift and reposition the dolly quickly between tasks. Machined billet aluminum construction ensures the handle withstands the rigors of daily job site use.

EPDM-Padded Support Rails

EPDM rubber padding strips on the support rails cushion and protect slab edges and finished surfaces from scratching or chipping during loading and transport. This is especially important when handling polished or delicate stone finishes.

Paired-Use Capacity of 2,400 lbs

When two HD4 dollies are used together, the combined load capacity reaches 2,400 lbs, enabling crews to move exceptionally large or heavy slabs that would otherwise require additional equipment or personnel. This scalability makes the HD4 a cost-effective investment for shops and installers handling oversized material regularly.

Common Applications

Countertop Slab Transport

Move large stone countertop slabs from delivery vehicles to the installation area safely and efficiently, even across uneven driveways or thresholds.

Tile and Stone Panel Handling

Transport large-format tile or stone panels on job sites where manual carrying poses injury risk or surface damage concerns.

Fabrication Shop Material Movement

Reposition raw slabs within a fabrication shop between cutting, polishing, and staging areas without requiring a forklift or overhead crane for every move.

All-Terrain Job Site Delivery

Navigate rough outdoor terrain, gravel paths, or uneven concrete slabs during material delivery to installation points that wheeled carts with smaller tires cannot reach.

Heavy Stone Installation

Support stone installers in positioning heavy natural or engineered stone pieces precisely at the point of installation, reducing manual lifting strain on crews.

Compatible Materials

• Natural stone slabs (granite, marble, quartzite, travertine)
• Engineered stone and quartz slabs
• Large-format porcelain and ceramic tile panels
• Solid surface and sintered stone panels
• Other heavy slab materials within the 1,200 lb. (single) or 2,400 lbs (paired) load capacity and 4.5" clamping range

Product Documents

• Pro-Dolly™ Model Comparison Sheet (PDF)

Frequently Asked Questions

Q: What is the maximum clamping range of the HD4?
A: The HD4 has a maximum clamping opening of 114.3 mm (4.5 inches), which is wider than the HD3's 76.2 mm (3 inch) range, accommodating thicker slabs and panels.

Q: Can two HD4 dollies be used together for heavier loads?
A: Yes. When used in pairs, two Pro-Dolly™ HD4 units provide a combined load capacity of 2,400 lbs, allowing crews to safely transport exceptionally large or heavy slabs.

Q: Will the tires mark finished floors?
A: No. The 9" closed-cell polyurethane tires are specifically designed to be non-marking, making the HD4 safe for use on finished interior floors during installation.

Q: What is the deck height of the HD4?
A: The HD4 deck measures 6-1/4" to the top of the deck and 3-1/4" to the bottom of the deck.

Q: What is included with the HD4?
A: Each purchase includes one Pro-Dolly™ HD4 dolly with the integrated holding clamp and carrying handle.