The VENTIT AST Classic transition box is a high-performance component designed for the seamless integration of flexible ducting into terminal air valves. Engineered fordual DN75 connectionsand a standard DN125 outlet, this 300mm plenum box ensures balanced airflow and airtight performance in residential and light commercial ventilation systems.
Key Benefits
Dual DN75 Inlets
Allows for the connection of two semi-rigid DN75 ducts, doubling the airflow capacity to a single terminal point without increasing velocity noise.
DN125 Compatibility
The outlet is perfectly sized for standard DN125 air supply or exhaust valves, ensuring a secure and professional finish at the ceiling or wall interface.
300mm Extended Body
The generous 300mm length provides flexibility during installation, allowing for adjustment in various ceiling depths and structural configurations.
System Efficiency
Part of the VENTIT AirFlex, this component supports highindoor air qualityby maintaining the design parameters of your HVAC network.
Application & Installation
The AST Classic transition box is ideal for installers working with semi-rigid air distribution systems. It is typically mounted within suspended ceilings or wall partitions. For optimal performance, ensure all duct connections are secured with gaskets or high-quality sealant. This unit is fully compatible with our range ofcentral heat recovery units, providing the necessary interface between main distribution lines and individual room terminals.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Series | AST Classic (AirFlex) |
| Inlet Connections | 2x DN75 (Outer Ø75mm / Inner Ø63mm) |
| Outlet Diameter | DN125 |
| Total Length | 300 mm |
| Material | Galvanized Steel |
| Primary Application | Air supply and exhaust transition |
Reliable Air Distribution Solutions
Ensure your ventilation system operates at peak efficiency with professional-grade plenum boxes.Explore our central heat recovery units
Diameter note: DN75 refers to the 75 mm outside duct diameter; the inside diameter is 63 mm.
| Brand | Ventit |