The VENTIT Prechodový box AST 2xDN75/125 is a precision-engineered air distribution component designed for high-efficiency **HVAC systems** utilizing semi-rigid ducting. Featuring dual DN75 inlets and a Ø125mm main connection, this **400mm transition box** ensures balanced airflow and minimal pressure loss in residential heat recovery installations.
Key Benefits
Modular Air Distribution
Part of the AirFlex ecosystem, this plenum box allows for flexible routing of semi-rigid ventilation ducts in tight ceiling voids or wall partitions.
Extended 400mm Reach
The 400mm neck length provides installers with additional depth flexibility, making it ideal for thick floor slabs or suspended ceiling structures.
Dual Port Efficiency
By splitting the airflow into two DN75 lines, this unit supports efficient air exchange while maintaining the quiet operation required for residential comfort.
Professional Grade
Designed for HVAC contractors who demand reliable, standardized connections that reduce installation time and eliminate the risk of airflow bottlenecks.
Technical Application & Compatibility
This transition box is specifically developed for modern **heat recovery** systems where air handling precision is critical. It serves as the bridge between the main air distribution branches and the terminal points, such as valves or diffusers. It is fully compatible with DN75 (75mm outer diameter) semi-rigid polyethylene (PE) ducting.
For optimal performance, ensure all connections are secured with original seals to maintain system pressure and prevent energy loss. If you require assistance with system sizing or component selection, pleasecontact our teamof technical experts.
Technical Specifications
| Parameter | Value |
|---|---|
| Primary Connection | Ø 125 mm |
| Secondary Connections | 2x DN75 DN75 (75 mm outside diameter, 63 mm inside diameter) |
| Total Length | 400 mm |
| System Category | AirFlex Air Distribution |
| Material | High-quality galvanized steel / technical polymer |
| Application | Supply and Exhaust Air Handling |
Engineered for Performance Airflow
Secure the efficiency of your ventilation system with a transition box built for reliability and professional standards.Central heat recovery units
Diameter note: DN75 refers to the 75 mm outside duct diameter; the inside diameter is 63 mm.
| Brand | Ventit |