18-Outlet Double-Row Ventilation Manifold and Air Distribution Box

An 18-outlet double-row HRV distribution box is the highest-capacity ventilation manifold in the double-row series, allowing for complex airflow distribution from a central 200 mm main duct to eighteen separate air outlets. The rigid galvanized steel casing ensures long-term durability and structural stiffness. Depending on project requirements, the unit can be equipped with three types of branch connections: galvanized steel (OC), plastic (PK), or rubber (GM).

Where is it used?

This manifold is designed for use in powerful, high-performance heat recovery ventilation (HRV) systems. The double-row arrangement of the branch connections maintains a relatively compact casing width (301 mm) for its capacity, which significantly simplifies installation in technical rooms, ventilation chambers, and behind suspended ceilings in large-scale residential or commercial facilities.

Design Features and Benefits

• Load-resistant steel casing: Galvanized steel resists corrosion and maintains its geometric shape during concealed installation under the pressure of structural elements.
• Maximum distribution capacity: 18 outlets arranged in two stacked rows provide the ultimate concentration of ductwork in a single node, minimizing the number of required main duct connections and saving installation time.
• Condensation protection: For systems operating with temperature fluctuations or cold outdoor air, insulated versions (index I) featuring a built-in mineral wool layer are available to prevent internal condensation.

Branch Connection Options

The selected material for the branch connections defines the duct fixing method and the overall airtightness of the junction:

• OC (Galvanized steel): A classic, high-strength solution. Rigid metal branches provide maximum mechanical integrity for the connection. Ducts are typically secured using standard hose clamps or reinforced sealing tape.
• PK (Plastic): Equipped with polymer branches featuring special fixing rings for the convenient and secure attachment of flexible pipes. Plastic components have low thermal conductivity, minimizing the risk of thermal bridging at the joints.
• GM (Rubber): Branches feature elastic seals for a friction-based, airtight fit. This design ensures the highest class of airtightness across the entire ventilation network and provides partial vibration dampening.

Technical Specifications

Dimensions (L x W x H)

Please note the overall dimensions of the unit for mounting space planning (all specified for the 200 mm version):

• OC model (Galvanized): 784 x 301 x 222 mm
• PK model (Plastic): 848 x 301 x 222 mm
• GM model (Rubber): 784 x 301 x 222 mm