{"product_id":"pro-cart-at4","title":"Pro-Cart AT4","description":"\u003ch2\u003ePro-Cart AT4 — Premium All-Terrain Slab Cart with 1,200 lb Capacity and Quick-Release Clamping\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Cart AT4 is Omni Cubed's next evolution of the Pro-Cart line, engineered for contractors and stone fabrication crews who need to move full stone slabs, panels, and countertop pieces across demanding jobsite conditions including curbs, stairs, gravel, lawns, and other rough terrain. With a 1,200 lb load capacity and 9\" closed-cell polyurethane all-terrain tires, the AT4 is built to reduce the physical burden on workers during heavy shop-to-site material transport. The cart features an upgraded Quick Release Speed Clamp with a 4.5\" maximum opening, accommodating thicker materials, mitered pieces, and larger edge profiles. An included Folding Kit allows the caster rails to rotate beneath the support beam for compact storage and easier transport between jobs.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003ePCAT4-26\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Capacity\u003c\/td\u003e\n\u003ctd\u003e1,200 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamp Opening (Max)\u003c\/td\u003e\n\u003ctd\u003e4.5 in. (114.3 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeck Height\u003c\/td\u003e\n\u003ctd\u003e16\" from deck to ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDoorway Clearance\u003c\/td\u003e\n\u003ctd\u003e64 inches of clearance for material through standard doorways\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Size\u003c\/td\u003e\n\u003ctd\u003e9\" closed-cell polyurethane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Dimensions\u003c\/td\u003e\n\u003ctd\u003e56-1\/2\" x 22-1\/2\" x 22-1\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFolded Dimensions\u003c\/td\u003e\n\u003ctd\u003e56-1\/2\" x 12\" x 16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Weight\u003c\/td\u003e\n\u003ctd\u003e69 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd\u003e58\" x 15\" x 11\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003eBox 1: 35 lbs, Box 2: 40 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport Rail to Ground\u003c\/td\u003e\n\u003ctd\u003e15\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBetween Clamp Uprights\u003c\/td\u003e\n\u003ctd\u003e45-1\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport Rail Length\u003c\/td\u003e\n\u003ctd\u003e56-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth at Outside of Tires\u003c\/td\u003e\n\u003ctd\u003e20-1\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Material\u003c\/td\u003e\n\u003ctd\u003eAnodized aluminum framework; machined billet aluminum tightening handles; stainless steel clamp shafts; stainless steel and zinc plated steel hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePadding \u0026amp; Protection\u003c\/td\u003e\n\u003ctd\u003eGrey non-marking clamping pads; EPDM padding strips on support rail; protective silicone end caps; silicone caps on contact points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheelbase\u003c\/td\u003e\n\u003ctd\u003eAdjustable wheelbase range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eOne cart with two holding clamps, one folding kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShips Within\u003c\/td\u003e\n\u003ctd\u003e3–5 business days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePro-Cart AT4 vs. AT3 Comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"https:\/\/www.diamondtoolstore.com\/products\/pro-cart-at3\" title=\"AT3 Pro Cart\"\u003ePro-Cart AT3\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003ePro-Cart AT4\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Capacity\u003c\/td\u003e\n\u003ctd\u003e1,200 lbs\u003c\/td\u003e\n\u003ctd\u003e1,200 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping Range (Max)\u003c\/td\u003e\n\u003ctd\u003e76.2 mm (3 in.)\u003c\/td\u003e\n\u003ctd\u003e114.3 mm (4.5 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Weight\u003c\/td\u003e\n\u003ctd\u003e64 lbs\u003c\/td\u003e\n\u003ctd\u003e69 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll-Terrain, Flat-Free, Non-Marking Rubber Tires\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEasily Goes Up Stairs\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuick-Release Clamp\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFolding Kit Included\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCompared to the AT3, the AT4 delivers a significantly wider 4.5\" clamp opening versus the AT3's 3\" opening, making it the right choice for thicker slabs, mitered edges, and more complex material profiles. The AT4 also adds a quick-release clamping mechanism and an included folding kit — features not present on the AT3 — giving crews faster setup, easier adjustment, and more compact storage without sacrificing the same 1,200 lb load capacity.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003ch4\u003eQuick Release Speed Clamp with 4.5\" Opening\u003c\/h4\u003e\n\u003cp\u003eThe upgraded quick-release clamping mechanism allows for faster, easier adjustment without removing the clamp from the cart, reducing downtime during material handling. The 4.5\" maximum opening accommodates thicker slabs, mitered pieces, and larger edge details that a standard clamp cannot grip securely.\u003c\/p\u003e\n\u003ch4\u003e9\" Closed-Cell Polyurethane All-Terrain Tires\u003c\/h4\u003e\n\u003cp\u003eThe flat-free, non-marking 9\" closed-cell polyurethane tires are engineered to roll over curbs, stairs, gravel, lawns, and other rough terrain without damaging finished surfaces. Their larger diameter improves stability and control when navigating jobsite obstacles under heavy load.\u003c\/p\u003e\n\u003ch4\u003eAnodized Aluminum and Stainless Steel Construction\u003c\/h4\u003e\n\u003cp\u003eThe anodized aluminum framework combined with machined billet aluminum handles and stainless steel clamp shafts delivers a corrosion-resistant, high-strength build that holds up to repeated heavy-duty use in demanding shop and jobsite environments. Zinc-plated steel hardware and radiused corners on all extrusions further extend service life and reduce snag points.\u003c\/p\u003e\n\u003ch4\u003eEPDM Rail Padding and Silicone End Caps\u003c\/h4\u003e\n\u003cp\u003eEPDM padding strips on the support rail and silicone caps on all contact points protect slab surfaces from scratching or chipping during transport. Grey non-marking clamping pads ensure finished stone faces are not marred when the clamps are tightened.\u003c\/p\u003e\n\u003ch4\u003eIncluded Folding Kit for Compact Storage\u003c\/h4\u003e\n\u003cp\u003eThe folding kit allows the caster rails to rotate beneath the support beam, reducing the cart's footprint for storage in a shop or transport in a vehicle. Folded dimensions of 56-1\/2\" x 12\" x 16\" make it practical to store multiple units or fit the cart into tighter cargo spaces.\u003c\/p\u003e\n\u003ch4\u003eAdjustable Wheelbase\u003c\/h4\u003e\n\u003cp\u003eThe adjustable wheelbase range allows crews to fine-tune the cart's stance for improved balance and control depending on slab size and terrain conditions. This adaptability helps maintain stability when moving large, cumbersome pieces through doorways or across uneven ground.\u003c\/p\u003e\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003ch4\u003eShop-to-Site Stone Slab Transport\u003c\/h4\u003e\n\u003cp\u003eMove full stone slabs from fabrication shop to installation site, including loading and unloading from vehicles, without requiring multiple workers to carry material by hand.\u003c\/p\u003e\n\u003ch4\u003eNavigating Stairs and Curbs\u003c\/h4\u003e\n\u003cp\u003eThe AT4 is designed to go up stairs and over curbs, allowing a crew to transport heavy slabs into buildings or across elevated thresholds that would otherwise require a lift or additional labor.\u003c\/p\u003e\n\u003ch4\u003eRough Terrain and Outdoor Jobsites\u003c\/h4\u003e\n\u003cp\u003eThe 9\" all-terrain tires handle gravel, lawns, and uneven ground, making the AT4 suitable for outdoor residential and commercial jobsites where smooth pathways are not available.\u003c\/p\u003e\n\u003ch4\u003eCountertop and Panel Installation\u003c\/h4\u003e\n\u003cp\u003eTransport large countertop pieces and panels through standard doorways with up to 64 inches of material clearance, reducing the risk of damage during tight-space maneuvering.\u003c\/p\u003e\n\u003ch4\u003eThicker Material and Mitered Edge Handling\u003c\/h4\u003e\n\u003cp\u003eThe 4.5\" clamp opening accommodates thicker slabs and mitered edge profiles that exceed the capacity of standard slab carts, expanding the range of materials a single cart can handle on a job.\u003c\/p\u003e\n\u003ch4\u003eFinished Surface Protection During Interior Moves\u003c\/h4\u003e\n\u003cp\u003eNon-marking rubber tires and silicone-capped contact points allow the AT4 to be used on finished floors without leaving marks or causing surface damage during interior installation work.\u003c\/p\u003e\n\u003ch3\u003eCompatible Materials\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNatural stone slabs (granite, marble, quartzite, travertine, limestone)\u003c\/li\u003e\n\u003cli\u003eEngineered quartz slabs\u003c\/li\u003e\n\u003cli\u003ePorcelain and large-format tile panels\u003c\/li\u003e\n\u003cli\u003eCountertop pieces and prefabricated sections\u003c\/li\u003e\n\u003cli\u003eMitered edge and thicker-profile stone pieces (up to 4.5\" clamp opening)\u003c\/li\u003e\n\u003cli\u003eGlass and other rigid panel materials within the 1,200 lb load capacity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Documents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0628\/4437\/1124\/files\/Carts_Comp_Sheet.pdf?v=1788194932\" rel=\"noopener\" target=\"_blank\"\u003ePro-Cart Comparison Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum clamp opening on the AT4?\u003c\/strong\u003e\u003cbr\u003eA: The AT4's Quick Release Speed Clamp has a maximum opening of 4.5 inches (114.3 mm), which accommodates thicker slabs, mitered pieces, and larger edge profiles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the AT4 differ from the AT3?\u003c\/strong\u003e\u003cbr\u003eA: The AT4 features a wider 4.5\" clamp opening compared to the AT3's 3\" opening, adds a quick-release clamping mechanism for faster adjustment, and includes a folding kit for compact storage — all at a higher price point. Both carts share the same 1,200 lb load capacity and all-terrain, flat-free, non-marking tire design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the AT4 include a folding kit?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The AT4 ships with one cart, two holding clamps, and one folding kit. The folding kit allows the caster rails to rotate beneath the support beam, reducing the folded footprint to 56-1\/2\" x 12\" x 16\" for easier storage and transport.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the AT4 tires mark finished floors?\u003c\/strong\u003e\u003cbr\u003eA: No. The 9\" closed-cell polyurethane tires are flat-free and non-marking, and the clamping pads are grey non-marking rubber, making the cart safe to use on finished interior surfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the AT4 navigate stairs?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The AT4 is specifically designed to go up stairs as well as over curbs, gravel, lawns, and other rough terrain encountered on typical jobsites.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How is the AT4 shipped?\u003c\/strong\u003e\u003cbr\u003eA: The AT4 ships in two boxes — Box 1 at 35 lbs and Box 2 at 40 lbs — with a combined shipping weight of 75 lbs. All products ship within 3–5 business days.\u003c\/p\u003e","brand":"Omni Cubed","offers":[{"title":"Default Title","offer_id":49293031833774,"sku":"PCAT4-26","price":1995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0551\/8396\/6382\/files\/carts_and_dollies_in_studio-1-resized_1.jpg?v=1788451072","url":"https:\/\/www.diamondtoolstore.com\/products\/pro-cart-at4","provider":"Diamond Tool Store","version":"1.0","type":"link"}