Pro-Cart AT3

Pro-Cart AT3 — 1,200 lb All-Terrain Stone Transport Cart for Job Site Use

The Pro-Cart AT3 is a heavy-duty stone and slab transport cart engineered for contractors and trades professionals who need to move large, heavy stone panels through active job sites. Built on a square tube aluminum framework with stainless steel hardware, it is designed to handle loads up to 1,200 lbs while maintaining maneuverability across uneven terrain. The 9" closed-cell polyurethane tires are flat-free and non-marking, making the cart suitable for both interior and exterior job site conditions. It ships as two boxes and includes one cart with two holding clamps ready for immediate use.

Technical Specifications

Model Comparison

The Pro-Cart AT3 is purpose-built for all-terrain job site transport of stone slabs up to 1,200 lbs, offering a more accessible price point compared to the AT4 while retaining the same load capacity and flat-free tire system. Contractors who require a wider clamping range (up to 4.5") or a quick-release clamp mechanism should consider the AT4 model. The AT3's aluminum and stainless steel construction keeps the cart lightweight relative to its capacity, reducing operator fatigue during extended use.

Key Features & Benefits

1,200 lb Load Capacity

The AT3 is rated to transport slabs and stone panels weighing up to 1,200 lbs, covering the majority of full-size stone slab weights encountered on residential and commercial job sites. This capacity allows contractors to move material in fewer trips, improving workflow efficiency.

All-Terrain, Flat-Free Polyurethane Tires

The 9" closed-cell polyurethane tires are designed to handle rough and uneven job site surfaces without going flat, eliminating downtime from punctures. The non-marking compound protects finished flooring and interior surfaces during indoor transport.

Stair-Capable Design

The AT3 is designed to go up stairs, a critical capability when delivering stone to upper floors without elevator access. This feature reduces the need for additional lifting equipment in multi-story installations.

Aluminum and Stainless Steel Construction

The square tube aluminum framework keeps the cart's own weight at 64 lbs while providing structural rigidity for heavy loads. Stainless steel clamp shafts and hardware resist corrosion in wet or outdoor job site environments, extending the service life of the cart.

Machined Billet Aluminum Tightening Handles

The tightening handles are machined from billet aluminum, providing a precise, durable grip mechanism for securing slabs. This construction reduces wear compared to cast or stamped alternatives and gives operators confident, repeatable clamping force.

Protective Clamping and Rail Padding

PVC clamping pads and EPDM padding strips on the support rail protect stone surfaces from scratching or chipping during transport. This is especially important when handling polished or finished stone that must arrive at the installation site undamaged.

Common Applications

Stone Slab Transport on Job Sites

Move full-size granite, quartz, marble, and similar stone slabs from delivery vehicles to the installation area across uneven job site terrain.

Multi-Story Slab Delivery

Transport heavy stone panels up staircases to upper floors where elevator or mechanical lift access is unavailable.

Interior Finished Floor Navigation

The non-marking tires allow the cart to be used on completed flooring surfaces without leaving scuffs or marks, making it suitable for use in occupied or near-complete spaces.

Countertop Fabrication Shop Material Handling

Move raw slabs within a fabrication shop environment between storage, cutting, and finishing stations.

Compatible Materials

• Granite slabs
• Quartz slabs
• Marble slabs
• Natural stone panels
• Engineered stone panels
• Other rigid slab materials within the 1,200 lb load capacity and 76.2 mm (3 in.) clamping range

Product Documents

• Pro-Cart Comparison Sheet (PDF)

Frequently Asked Questions

Q: What is the maximum load the Pro-Cart AT3 can carry?
A: The AT3 is rated for a maximum load capacity of 1,200 lbs.

Q: What is the maximum clamping range of the AT3?
A: The AT3 clamps up to 76.2 mm (3 in.) at maximum opening. Contractors needing a wider clamping range should consider the AT4, which opens to 114.3 mm (4.5 in.).

Q: Will the tires mark or damage finished floors?
A: No. The 9" closed-cell polyurethane tires are non-marking, making the cart safe to use on completed interior flooring surfaces.

Q: Can the AT3 be used on stairs?
A: Yes. The Pro-Cart AT3 is designed to go up stairs, enabling transport of stone slabs to upper floors without mechanical lifting equipment.

Q: How does the AT3 ship?
A: The AT3 ships in two boxes. Box 1 weighs 30 lbs and Box 2 weighs 40 lbs, for a combined shipping weight of 70 lbs.

Q: What is included with the AT3?
A: Each AT3 includes one cart and two holding clamps.