6-Outlet Ventilation Manifold and Air Distribution Box (Flat Inlet)

A 6-outlet HRV distribution box with a flat inlet is a specialized ventilation manifold designed to distribute airflow from the main duct to six separate air outlets. The key feature of this model is its rectangular (flat) inlet. This design allows the manifold to be connected directly to flat ventilation ducts without the need for additional transition adapters. Depending on project requirements, the unit can be equipped with galvanized steel (OC), plastic (PK), or rubber (GM) branch connections.

Where is it used?

This air distribution box is optimally suited for heat recovery ventilation (HRV) systems operating under strict height limitations. The use of a flat main duct connection allows the manifold to be installed in extremely tight suspended ceiling voids, directly within concrete floor screeds, or in shallow wall niches, thereby preserving the effective volume and ceiling height of the room.

Design Features and Benefits

• Direct flat duct connection: The rectangular inlet saves vertical mounting space and reduces aerodynamic resistance (pressure drop) within the system by eliminating the need for round-to-flat duct transitions.
• Load-resistant steel casing: The rigid galvanized steel securely protects the structure against deformation during concrete pouring or concealed installation under the pressure of structural elements.
• Condensation protection: For systems exposed to temperature fluctuations (e.g., unheated zones or cold outdoor air supply), 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 thermal performance of the junction:

• OC (Galvanized steel): A classic, high-strength solution. Rigid metal branches provide maximum mechanical integrity and reliability 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 ducts. Plastic components have low thermal conductivity, reducing the risk of thermal bridging at the joints.
• GM (Rubber): Branches feature elastic seals for a friction-based, airtight fit. This design ensures high levels of airtightness across the entire ventilation network and provides partial vibration dampening.

Technical Specifications

Dimensions (L x W x H)

Please note that the overall dimensions vary depending on the chosen branch type (dimensions are identical for both 200x50 and 200x90 inlet versions):

• OC model (Galvanized): 349 x 181 x 93 mm
• PK model (Plastic): 373 x 191 x 93 mm
• GM model (Rubber): 349 x 181 x 93 mm