Maico MAI BK 31 External damper Electric closing damper

Ratings
BrandMore from Maico
Delivered between 13.3.2026 and 27.3.2026
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Product details

The MAI BK 31 external flap is an electric closure flap that serves as an effective weather protection and cold air barrier when the fan is turned off. It is specifically designed for use in ventilation systems and provides a reliable solution for regulating airflow. The flap automatically opens and closes when the fan is turned on and off, allowing for easy handling and integration into existing systems. With a rated power of 25 W and a rated current of 0.01 A, the BK 31 is both energy-efficient and powerful. The flap is made of robust plastic and meets the IP 55 protection class, making it ideal for outdoor use. Additionally, special versions with limit switches are available upon request to provide additional functionalities.

  • Electric control for automatic opening and closing
  • Provides weather protection and cold air barrier
  • Energy-efficient with a rated power of 25 W
  • Robust plastic construction with IP 55 protection class
  • Special versions with limit switches available upon request.

Key specifications

Item number
32175078

General information

Manufacturer
Maico
Category
Ventilation technology
Manufacturer no.
0093.0902
Release date
16.11.2022

Colour

Colour
Grey, White
Exact colour description
Silver grey, similar to RAL 9016, traffic white

Material

Material group
Plastic
Material
Plastic

Ventilation technology Features

Suitable for pipe diameter
315 mm

Power supply

Power
25 W

Origin

Country of origin
Germany

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Length
50.50 mm
Width
430 mm
Height
430 mm
Weight
1850 g

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Ventilation technology» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • Maico
    Not enough data
  • 1.Prebena
    0 %
  • 1.Wallair
    0 %
  • 3.Suprex
    0.1 %
  • 4.Helios
    0.2 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Maico
    Not enough data
  • 1.Helios
    0 days
  • Bird
    Not enough data
  • Bosch Home Comfort
    Not enough data
  • Cata
    Not enough data

Return rate

How often is a product of this brand in the «Ventilation technology» category returned?

Source: Digitec Galaxus
  • Maico
    Not enough data
  • 1.Bird
    0 %
  • 2.Prebena
    0.6 %
  • 3.Sugatsune
    1.3 %
  • 4.Cata
    1.7 %
Source: Digitec Galaxus