VNKM Adjustable Vent for Round Duct

Categories Air Diffusion, Grilles and Vents

VNKM Adjustable Vent for Round Duct

A terminal air distribution element designed specifically for round ductwork. Features adjustable blades within a galvanized steel frame for precise airflow control in supply or exhaust ventilation systems.

Product Description

Key Features & Benefits

For Round Ducts
Specifically engineered for termination and airflow control on round ventilation ducts.
Cross-Blade Design
Features vertical front blades and horizontal rear blades for effective air deflection and mixing.
Full Regulation Range
Compatible with all standard controls: R1, R2, R3, R5, R6 for precise airflow and pressure adjustment.
Screw-Fastened Installation
Designed for simple, secure screw fastening directly into the round duct opening.
Hybrid Metal Construction
Galvanized steel frame for strength; anodized aluminum blades for corrosion-free operation.

Technical Specifications

Duct Compatibility

Designed for round duct openings. Frame dimensions are 25mm smaller than the opening (W1 = W-25, H1 = H-25).

Blade Configuration

Available as single-row or double-row. Fixed 20mm blade spacing. Front (vertical) & rear (horizontal) blades.

Regulation Types

R2: For air supply only. R1, R3, R5, R6: For both supply and exhaust.

Material & Finish

Frame & Controls: Galvanized steel (RAL coating optional). Blades: Anodized aluminum profiles.

Airflow Capacity

High-volume design, suitable for flows from 100 to approximately 5,000 m³/h.

Installation & Control

Direct Duct Mounting

Vent is placed into the round duct opening and secured with supplied screws. No separate frame needed.

Pre-Installation Adjustment

Airflow is set by adjusting the blade angle and regulation mechanism (R1-R6) before final screw tightening.

Simple Procedure

1. Place vent in opening.
2. Secure with screws.
3. Adjust airflow via control mechanism.

Use Cases