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Big Foot Multi-Frame, Adjustable Ground Support System for VRF/VRV Outdoor Units
Quick-to-assemble, modular, and non-penetrative support system designed for VRF/VRV outdoor units, air conditioners, and heat pumps.
The Big Foot Multi-Frame is the ideal rooftop and ground support solution for modern HVAC installations. It combines speed, flexibility, durability, and roof protection in one modular system.
- Fast Installation: Adjustable leg assemblies and modular kits allow for rapid setup, saving labor time.
- Flexible & Expandable: Frame lengths of 1000mm, 2000mm, or 3000mm, expandable with extension kits to suit small or large equipment.
- Heavy-Duty Performance: Standard load capacity of 500kg, customizable up to 1000kg.
- Roof-Safe Design: Non-penetrative rubber feet distribute weight evenly and prevent leaks or damage.
- Weather Resistant: Galvanized steel and UV-resistant plastic withstand rain, snow, wind, and temperature extremes.
- Sustainable & Reusable: Modular construction allows relocation or expansion; materials are recyclable.
- OEM/ODM Available: Custom sizes, finishes, and packaging options for specific project needs.
Product Overview
The Big Foot Multi-Frame is engineered to simplify the installation of VRF/VRV outdoor units, heat pumps, air conditioners, and rooftop HVAC equipment. Its modular design allows easy expansion, while adjustable legs ensure stability on uneven surfaces.
Constructed from galvanized steel, UV-resistant plastic, and heavy-duty rubber feet, the system offers long-term durability and vibration reduction. It eliminates the need for roof penetration, protecting the building structure and reducing maintenance costs.
This makes it an ideal choice for contractors, engineers, distributors, and procurement managers seeking a reliable, safe, and cost-effective support solution.
Technical Specifications
| Feature | Details |
|---|---|
| Adjustable Height | 395–590mm |
| Frame Lengths | 1000mm / 2000mm / 3000mm (custom options available) |
| Material | Galvanized steel, UV-resistant plastic, rubber feet |
| Load Capacity | Standard: 500kg / Custom: up to 1000kg |
| Design | Modular, expandable with extension kits |
| Applications | VRF/VRV outdoor units, HVAC, ducting, pipework, solar panels, communication equipment |
| Installation Type | Non-penetrative rooftop or ground installation |
| Maintenance | Minimal – periodic inspection only |
| Weather Resistance | Rain, wind, snow, UV, and temperature extremes |
Applications
The Big Foot Multi-Frame is suitable for:
- VRF/VRV outdoor unit installations
- Rooftop air conditioner and heat pump support
- Ducting and pipework support
- Electrical and communication rooftop equipment
- Temporary or permanent rooftop or ground installations
It is versatile enough to adapt to residential, commercial, or industrial projects, saving both time and labor.
Comparison: Big Foot Multi-Frame vs. Traditional Rooftop Mounts
| Aspect | Big Foot Multi-Frame | Traditional Concrete Blocks / Drilled Mounts |
|---|---|---|
| Installation | Quick assembly with modular kits, adjustable legs | Time-consuming; requires drilling or heavy concrete placement |
| Roof Protection | Non-penetrative design with rubber feet; no roof damage | High risk of leaks, cracks, and long-term roof damage |
| Flexibility | Modular, expandable, and reconfigurable | Fixed structure; difficult to modify |
| Load Capacity | Standard 500kg; customized up to 1000kg | Limited; stability depends on concrete weight |
| Weather Resistance | Galvanized steel + UV-resistant materials | Concrete can crack; drilled mounts may corrode |
| Weight & Handling | Lightweight; easy to transport and install | Heavy; labor-intensive |
| Maintenance | Minimal; periodic inspections only | Higher; potential roof repair, corrosion treatment |
| Sustainability | Recyclable materials; eco-friendly | High carbon footprint; non-reusable |
| Applications | VRF/VRV, HVAC, ducting, pipework, solar panels | Mostly HVAC or single-purpose use |
| Total Cost of Ownership | Lower long-term cost due to durability & flexibility | Higher over time due to roof repairs & lack of adaptability |
Key Takeaway: The Big Foot Multi-Frame offers faster installation, superior roof protection, and long-term savings, making it a smarter choice for modern HVAC projects.
FAQ – Procurement-Focused Questions
1. What is the maximum load capacity?
Standard configuration supports 500kg; customized setups can handle up to 1000kg.
2. Can it be customized?
Yes. We offer OEM/ODM options including frame size, finish, and load capacity.
3. What is the delivery time?
Standard sizes: 25-30days, Customized orders depending on specifications.
4. Is installation complicated?
No. Quick assembly with adjustable legs and modular kits; no roof drilling required.
5. Will it damage the roof?
No. Non-penetrative rubber feet evenly distribute weight and protect roof membranes.
6. What maintenance is required?
Minimal. Periodic inspections only; galvanized steel and UV-resistant components resist corrosion.
7. Can it withstand all weather conditions?
Yes. Designed for rain, wind, snow, and extreme temperatures.
8. Can it be reused for future projects?
Absolutely. Modular and reconfigurable design allows relocation, expansion, or reuse.
Ready to simplify your rooftop HVAC installations?
Why Choose ClimateCarer?
- Trusted OEM/ODM manufacturer since 2017
- Factory-direct pricing for distributors and wholesalers
- Full customization and technical support available
- Samples available for evaluation
Get in touch today to explore wholesale pricing, technical datasheets, or a custom solution for your next VRF/VRV or HVAC project.
In practice
A multi-frame ground support exists because outdoor units are rarely set on a perfect base. The single pad under one foot is enough when the slab is level and the unit is small; the moment the base is uneven, or the unit is large enough that four feet do not share the load evenly, the frame is what keeps the machine level and quiet instead of rocking and transmitting noise into the building.
The adjustable height is what makes it practical on site. Rather than ordering three different pad heights to match a base that is not quite what the drawing showed, the frame is set to the height the installer needs and locked. Check the unit is level in both directions after the frame has taken load, and again after the first season — an outdoor machine in weather always moves a little.