DOSPEL wall vent Dospel KRATKA KRZ 100/125 – rectangular wall grille for 100 mm to 125 mm duct connection

DOSPEL wall vent Dospel KRATKA KRZ 100/125 is a rectangular wall grille designed to cover wall penetrations and provide a tidy, functional connection point for round ventilation ducts with nominal diameters of 100 mm and 125 mm. The grille is intended for surface mounting on external or internal walls and serves as an inlet or outlet terminal for mechanical or natural ventilation systems in residential and light commercial buildings. Its compact rectangular faceplate conceals the duct entry and offers a simple interface for attaching standard circular ducting.

Advantages

The grille provides a compact and unobtrusive exterior finish while enabling quick connection to 100 mm or 125 mm round ducts. Its rectangular faceplate reduces visible cavity around the duct penetration and helps maintain a consistent wall appearance. The design allows for straightforward installation and routine access for inspection or minor maintenance without requiring complex modifications to existing ductwork.

Suitable for

• Connecting round ventilation ducts (100 mm and 125 mm) through walls
• Fresh air inlet or exhaust outlet in apartments and houses
• Ventilation terminations for small offices, utility rooms, or kitchens
• Retrofitting existing ventilation systems where a compact wall terminal is preferred

Key specifications

• Mounting type: rectangular wall-mounted grille
• Compatible duct diameters: nominal 100 mm and 125 mm round ducts
• Application: inlet or outlet ventilation terminal for residential and light commercial use
• Installation location: external or internal wall penetration
• Construction: faceplate covering duct entry and providing connection interface

How to use

Prepare the wall opening to match the rectangular grille faceplate and ensure the circular duct end is accessible from the wall cavity. Secure the grille to the wall using appropriate screws or fasteners for the wall material, making sure the compatible 100 mm or 125 mm duct is fitted into the grille’s circular connection. Seal any gaps between the duct and wall cavity as needed to avoid air leakage. After mounting, check that airflow direction and clearances comply with the ventilation system design and that the grille sits flush with the wall surface.

Usage recommendations

For best performance, verify duct diameter before installation and use suitable sealing material at the connection to reduce leakage. Periodically inspect the grille for blockages or damage and clear any debris to maintain airflow. When installing on exterior walls, consider additional frost or insect protection measures if the local climate or surroundings require it.