Exhaust Ventilation / APB

Window Exhaust Fan with Louvers

Ventilate when running. Limit backflow when stopped.

A window-mounted exhaust fan with an impeller and gravity-operated louvers for direct exhaust at suitable openings.

Louver designEngineering-material housingImpeller exhaust

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PRODUCT FEATURES

Details designed around use.

Louver design

Gravity-operated louvers help reduce backflow when stopped.

Engineering-material housing

The housing uses engineering materials.

Impeller exhaust

Large blades and a motor generate exhaust airflow.

DESIGN & OPERATION

From operating principles to everyday use.

Automatic louvers

Louvers open during operation and close when stopped to reduce reverse airflow. Leave sufficient clearance for movement.

Support and mounting

The documentation describes a motor held by multiple support points. Check the opening, mounting strength and exhaust direction for wall or window installation.

INSIDE THE PRODUCT

Explore the construction and functions.

Window Exhaust Fan with Louvers: components and functions — Components and construction

Window Exhaust Fan with LouversLouvers in open and closed positions — Louvers in open and closed positions

SPECIFICATIONS

Specifications at a glance.

Specification index
Product series	APB
Product category	Louvered Exhaust Fans
Construction feature	Louver design
Selection information	See the dimension and performance charts on this page

Specifications follow the corresponding product documents. Do not combine figures from different models. Confirm operating conditions and the supplied configuration.

Window Exhaust Fan with Louvers: dimensions, construction and performance charts — Dimensions and specifications - click to enlarge

Exhaust Ventilation — application illustration

APPLICATION & SELECTION

Small spaces deserve good ventilation.

Ventilators, ceiling exhaust fans and louvered fans for ceiling and window installations.

Before selecting a product

Ceiling or window type, mounting opening, duct connection diameter and exhaust route.

Application illustration, not a record of a completed project.

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PRODUCT QUESTIONS

Questions about this product

What are the key features of the Window Exhaust Fan with Louvers?

Louver design：Gravity-operated louvers help reduce backflow when stopped.；Engineering-material housing：The housing uses engineering materials.；Impeller exhaust：Large blades and a motor generate exhaust airflow.

What should I check before selecting the Window Exhaust Fan with Louvers?

Please confirm: Ceiling or window type, mounting opening, duct connection diameter and exhaust route.