Overview:
Ventilation sandwich panel is a specially designed panel that integrates air channels within the insulation core, enabling seamless air distribution without additional external ductwork. It supports efficient airflow management for HVAC systems in cleanrooms, with metal or composite surfaces ensuring airtight, particle-free pathways. This design reduces system complexity, saves overhead space, and maintains consistent air quality, commonly used in controlled environments requiring integrated ventilation solutions.
Product Origin:
ChinaShipping Port:
Shanghai
It is a specially designed cleanroom panel that integrates air channels inside the insulated wall, enabling return and exhaust air distribution without adding external ductwork. Metal or composite surfaces keep the air path airtight and particle-free, while the panel can host a stainless-steel return-air outlet at low level. By building the return path into the wall, it reduces system complexity, saves overhead space and helps maintain consistent air quality — commonly used in controlled environments that need integrated ventilation. It pairs naturally with our FFU ceiling grid and the broader cleanroom sandwich panel range.
Clean air is supplied from the FFU ceiling and flows downward in a unidirectional “top-supply, bottom-return” pattern. Because the return outlets sit low in the wall, the airflow direction matches the natural settling direction of dust particles — so contaminants are swept smoothly toward the filtered return rather than re-circulated across work surfaces.
The integrated stainless-steel return-air outlet can be supplied in several face styles to suit airflow, cleanliness and aesthetics:
| Feature | Ventilate Sandwich Panel | Stainless-Steel Return Outlet |
|---|---|---|
| Core function | Unified airflow direction | Energy saving & condensation resistance |
| Material | Modular sandwich structure | Premium stainless steel |
| Key features | Air renewal, eliminates static electricity | Corrosion-resistant, clean appearance |
| Best application | General cleanroom workshops | Medicine, chemical industry, etc. |
Energy note: when the indoor load is steady, returning part of the indoor air to the AHU and mixing it with a small amount of fresh air produces cooled supply air far more efficiently than using 100% fresh air — a meaningful running-cost saving over the life of the cleanroom.
| Panel type | Return / exhaust air sandwich panel with integrated air channel |
| Facing | Coated steel, stainless steel or composite (airtight, antistatic, corrosion-resistant) |
| Core options | Rock wool · PU · PIR |
| Return outlet | Stainless steel; louver / slot / grate / mesh / orifice / mushroom face, filter-ready |
| Airflow scheme | FFU top-supply, low-sidewall bottom-return (unidirectional) |
| Mounting guidance | Outlet upper edge below ~0.7 m work-area line, ≥ ~0.2 m above floor |
| Size / airflow capacity | Customizable — sized to room volume & air-change rate |
Wonclean designs, manufactures and installs modular cleanroom and laboratory systems for the pharmaceutical, medical-device, food and electronics industries. From the return-air layout to the finished wall, our own production base and design team support the project — backed by a 2-year warranty, two free on-site inspections per year, 24-hour fault response and lifetime relocation service.
In the lower part of the room. With a low return, the airflow direction matches the settling direction of dust particles, so they are discharged toward the outlet more smoothly instead of being stirred back into the work zone.
The work area generally starts about 0.7 m above the floor, so the outlet’s upper edge should stay below that line — with roughly 0.2 m clearance — otherwise airflow can travel over countertops and carry contamination across them.
By maintaining fresh-air circulation and applying filter efficiency at the return outlets, the system stops pollutants migrating between different workshops — keeping each controlled space independent.
When the indoor load is steady, part of the return air is sent back to the AHU and mixed with a small amount of fresh air to make supply air. This is significantly more energy efficient than conditioning 100% fresh air.
It is easy to install and clean, helps eliminate static electricity, and ensures the airflow direction matches the settling direction of dust particles — all while building the return path into the wall to save space.
Yes. Stainless-steel outlets are widely chosen for medicine and chemical industries because they are corrosion-resistant and resist condensation. We size the panel, outlet style and airflow capacity to your room volume and cleanliness target.
Tell us your room size, cleanliness level, outlet style and core material. Our engineers design the return-air layout and send a competitive factory-direct price — with a free sample on request. Typical reply within 24 hours.
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