Choosing the right jack tray and compatible accessories for a 4-post lift can improve safety, efficiency, and vehicle handling during maintenance. This guide highlights five relevant products designed to work with four-post setups, including dedicated jack trays, rolling bridge jacks, and protective pads. It also clarifies who should consider each option—shop pros, serious DIYers, or those upgrading a home garage. A quick comparison table helps you scan key features at a glance, so you can pick the model that best fits your needs and workspace.
| Product | Best For | Key Benefit | Limitations |
|---|---|---|---|
| ATLAS Equipment 37″ Steel Jack Tray | Owners with open runway spaces | Heavy-duty steel tray that fits 36 1/2″ to 37 1/2″ spacing | Only a tray; may require compatible lift setup |
| KT-4H950 3.0 HP Heavy Duty with Oil Tray | Pro shops and garages with 4-post lifts | Oil tray included and high lifting capacity (9,500 lbs) | Heavy, larger footprint |
| KATOOL Rolling Jack Bridge Jack for KT-4H110/4H850 | High-capacity lifting and wheel service | Versatile rolling bridge jack with 7,000 lbs capacity | Not a fixed tray; mobility adds setup steps |
| Atlas Automotive XH-PROJACK35 3,500 Capacity Sliding Bridge Jack | Under-vehicle access and sliding operation | Manual, sliding bridge for level lifting | Lower capacity than some heavy-duty units |
| HXXF Floor Jack Pad Adapter 4 Ton (4 Pack) | Protection and frame rail safety | Protects pinch welds and floor during jacking | Accessory, not a lifting platform |
ATLAS Equipment 37″ Steel Jack Tray

Best for shop floors with an open runway, this ATLAS jack tray is built from steel for durability. It is designed to fit a 36 1/2″ to 37 1/2″ open space, making it a strong match for many 4-post lift configurations. The tray helps distribute weight and protect the lift’s structure during jack usage. Ideal for garages prioritizing rugged construction and straightforward installation. A caution: verify clearance and mounting compatibility with your specific lift model before purchase.
KT-4H110/4H850 Rolling Jack Bridge Jack (KATOOL)

Best for heavy-duty wheel service and under-chassis work on four-post lifts, this rolling bridge jack delivers up to 7,000 lbs of lifting capacity. It is engineered with industrial-grade steel and reinforced welds for stability, making it a solid choice for professional shops or serious home garages. It supports precise height control and a stable base for brake work and suspension checks. Use this if you need mobility and substantial load handling; avoid if you require a fixed, integrated tray rather than a moveable jack.
KATOOL Rolling Jack Bridge Jack for KT-4H110/4H850 (Second Model)

Best for setups requiring multiple height positions with 5.3″ lowered pad height and 18.3″ maximum height using adapters, this unit provides multiple locking heights. It supports up to 5,000 lbs and offers a practical solution when a fixed tray isn’t needed. Choose this if you want flexible height options and a lower entry height; pick the fixed tray option if you prefer a dedicated surface for jacks and wheels.
Atlas Automotive XH-PROJACK35 3,500 Capacity Sliding Bridge Jack

Best for under-vehicle access and adjustable positioning on a four-post lift, this 3,500 lb capacity sliding bridge jack offers manual operation with a scissor mechanism for level lifting. It is suited for spaces where a sliding bridge is advantageous and where maximum lift height aligns with common maintenance tasks. Consider capacity limitations if you routinely service larger full-size trucks, and ensure compatibility with your lift’s crossbeams and load geometry.
HXXF Floor Jack Pad Adapter 4 Ton (4 Pack)

Best for protecting frame rails and pinch welds during jacking, these rubber pad adapters are rated up to 4 tons. They come in a pack of four, making them a practical addition for garages with multiple jacks or frequent lifting tasks. They help distribute pressure and reduce metal-on-metal wear. A limitation: these are protective accessories rather than lifting devices, so pair them with a compatible jack or tray for full effectiveness.
Buying Guide
- What are you lifting? If you routinely handle heavy trucks, prioritize higher-capacity jacks and integrated oil trays (KT-4H950 or similar) over lighter-duty trays.
- Fixed tray vs. rolling jack? Fixed trays (like the ATLAS 37″ Tray) provide a dedicated surface, while rolling bridge jacks offer flexibility for undercarriage access and variable work areas.
- Work height needs: For low-clearance vehicles, look for low pad heights and adjustable adapters to reach desired service heights.
- Protection and longevity: Use rubber pad adapters to protect pinch welds and ensure longevity of the lifting components and frame rails.
- Space and compatibility: Check your four-post lift’s runway width, crossbeam design, and clearance to ensure a tray or jack bridge will fit without interference.
FAQ
- What is a jack tray used for on a four-post lift?
– A jack tray provides a stable, dedicated surface for jacking components, protecting rails and distributing weight during maintenance. - Should I choose a fixed jack tray or a rolling bridge jack?
– Choose a fixed tray for dedicated support and simplicity, or a rolling bridge jack for better maneuverability and undercar access. - Are pad adapters necessary with a four-post lift?
– Pad adapters protect pinch welds and frame rails, especially when using floor jacks repeatedly. - What capacity do I need on a jack for a four-post lift?
– Capacity depends on the heaviest vehicle you service. Match or exceed the weight you typically lift, with some extra margin for safety. - Can these accessories work together?
– Yes, combining a fixed jack tray with protective pads and a compatible bridge jack can maximize safety and efficiency. Always verify compatibility with your specific lift model. - Is a lifting oil tray important?
– An oil tray helps contain fluids during maintenance, reducing cleanup time and protecting the lift area.