Duct fans

A duct fan is selected for the specific duct and operating mode required. Match system airflow and pressure, then check the connection, mounting and exact reference's data.

Describe the entire air path

Record duct diameter and length, bends, transitions and final air distribution. These elements affect required pressure. A fan's maximum free airflow alone does not describe operation in an installed system. Prepare airflow and pressure requirements together instead of choosing by the single largest number. For replacement, establish the existing route too, because connection size is only part of the check.

Dimensions and mounting space

Compare the exact connection dimensions with the duct and adapters required. Check the housing dimensions and intended space for mounting and access. Title designations provide an initial selection; confirm the full dimensional data in the documentation. Do not assume that a similar model name or close size means the same connection. If supplementary parts are needed, establish their exact references and intended use with the selected system.

Compare operation under the relevant conditions

The names include different airflow, power and noise designations. Check the conditions to which the specific fan's stated data apply. Do not combine measures from different modes or measurement conditions as one overall performance. For noise, compare how it is stated before comparing values. Where a specific control or mode is required, confirm support on the exact model and the supplementary components required in the documentation.

Check electrical version, installation instructions and permissible environmental conditions for the chosen reference. If retaining part of the existing system, identify connected components. A similar housing or general series name does not replace checking the specific combination. Selection follows the system specification and is not a universal formula based on room area.

Choose the right format

The products shown from CATA and MMotors can be browsed by exact code after clarifying the route. If another mounting format is needed, continue to bathroom and room fans. The general fans section connects the solutions. Finally, check airflow and pressure, connection, installation location, control and required accessories for each separate airflow path in the project.