Manifold Cabinets for Underfloor Heating & Radiator Systems
Durable, Installer-Friendly & Customizable Collector Cabinets

Steeling manufactures manifold cabinets (collector cabinets) designed for underfloor heating systems, radiator distribution systems, and substation/mixing groups. Our cabinets provide a secure, corrosion-resistant, and installation-optimized housing solution for HVAC manifolds in residential and commercial buildings.
If you are searching for:
- underfloor heating manifold cabinet
- recessed manifold cabinet
- surface mounted collector cabinet
- heating distribution cabinet
- HVAC manifold enclosure
Steeling offers durable, project-ready solutions with multiple size and connection options.
Applications
Our manifold cabinets are widely used in:
- Underfloor heating installations
- Radiator distribution systems
- Central heating mechanical rooms
- Residential apartment projects
- Villas and housing developments
- Office and commercial buildings
- Mechanical contracting projects
They are suitable for both new construction and renovation projects.

Model Options
We offer two structural configurations to meet different project requirements: a cost-efficient standard version and a reinforced heavy-duty version. Below are the available sizes and technical details.
Standard Series Manifold Cabinets
Model Specifications
ECO COLLECTORS
| Code | a (mm) | b (mm) | A (mm) | B (mm) | H (mm) | Number of Connections |
| ECO400 | 396 | 432 | 620 | 107 | 429 | 6-8 |
| ECO600 | 596 | 432 | 620 | 107 | 629 | 10-12 |
| ECO800 | 796 | 432 | 620 | 107 | 829 | 14-16 |
Eco Collectors Technical Specifications
Materials:
- Feet: 0.8 mm galvanized steel
- Body: 0.6 mm electrostatic painted sheet metal
- Cover: 0.8 mm electrostatic painted sheet metal
- Bottom cover: 0.8 mm electrostatic painted sheet metal
- Color: RAL 9003 White
Key Features
- 2 pipe entry holes on each side
- Wall-mounting holes for direct installation
- Secure metal lock system
- Adjustable height feature
- Compatible with underfloor heating, radiator systems, and mixing groups
Recommended for: residential projects and standard-capacity heating systems

Reinforced (Heavy-Duty) Manifold Cabinets
PRO COLLECTORS
| Code | a (mm) | b (mm) | A (mm) | B (mm) | H (mm) | Number of Connections |
| PRO400 | 392 | 505 | 726 | 108 | 452 | 6-8 |
| PRO600 | 592 | 505 | 726 | 108 | 652 | 10-12 |
| PRO800 | 792 | 505 | 726 | 108 | 852 | 14-16 |
| PRO1000 | 992 | 505 | 726 | 108 | 1052 | 18-20 |
| PRO1200 | 1192 | 505 | 726 | 108 | 1252 | 22-24 |
Pro Collectors Technical Specifications
Materials:
- Feet: 0.8 mm galvanized steel
- Body: 0.8 mm galvanized steel
- Cover: 1 mm electrostatic painted sheet metal
- Frame: 1 mm electrostatic painted sheet metal
- Color: RAL 9003 White
Key Features
- Depth-adjustable and removable frame
- 3 pipe entry holes on each side for improved accessibility
- Secure metal lock system
- Adjustable height feature
- Compatible with underfloor heating, radiator systems, and mixing groups
Recommended for: commercial buildings, high-capacity manifold systems, and demanding installation environments.

Why Our Manifold Cabinets Stand Out
Corrosion-Resistant Construction
Galvanized steel structure combined with electrostatic powder coating ensures long service life in mechanical rooms and concealed wall installations.
Installation Efficiency
Multiple pipe entry points, adjustable height, and accessible frame design reduce installation time for HVAC contractors.
Wide Capacity Range
From 6 to 24 connections, our cabinets support both compact residential systems and large distribution manifolds.
Secure & Professional Finish
Integrated metal locking system and clean RAL 9003 white surface provide safety and aesthetic compatibility with modern interiors.
Bulk & OEM Supply
We support mechanical wholesalers, HVAC brands, contractors, and project developers with scalable production and export-ready logistics.

Technical & Commercial Support
Steeling provides:
- Technical documentation upon request
- Project-based quantity planning
- Export packaging
- Reliable lead times for large-scale developments
Request a Quote
Looking for a reliable manifold cabinet supplier for your heating project?
Contact our team to receive pricing, technical assistance, and bulk order options.