Dimensio start
Switch language:
Svenska
Norsk
Deutsch
Dansk
Suomi

Roof cowls

For many years Bevent Rasch has developed and manufactured cowls for ventilation systems. We have delivered products to most types of projects: offices, schools, hospitals, laboratories, industries, housing and thus have vast experience of different products for different applications. In 1985, we were the first on the market to launch the combination cowl that became a success! All cowls are manufactured in Sweden in our modern factory in Motala and can be customised by our design department.


Step 1 – Sizing

Get suggestions for suitable products based on desired values or select a specific product.

Suggest suitable products

Select a specific product

MANDATORY (Select the type of cowl and fill in the desired air flow):

SELECT THE TYPE OF COWL

Exhaust air
Outdoor air
Combination cowl

Air flow

l/s
m3/h

OPTIONAL (Select the desired pressure drop and/or the desired size):

Pressure drop

from
to

and / or

Size

Suggest suitable products

Select a specific product

SELECT THE TYPE OF COWL

Exhaust air
Outdoor air
Combination cowl
DELTA-AH

DELTA-AH

Low pressure drop, available in stock in the most common sizes

BRTH

BRTH

Very low pressure drop and air direction to the sides

BRBA

BRBA

For large high-velocity air flows

BRDJ

BRDJ

For large high-velocity exhaust air flows

BREA (exhaust air)

BREA (exhaust air)

Outdoor or exhaust air cowl with a very low pressure drop for e.g. smoke evacuation.

BRKA (exhaust air)

BRKA (exhaust air)

Outdoor or exhaust air hood for small, low velocity air flows

BRFH

BRFH

Traditional exhaust air cowl

BRSF

BRSF

Traditional chimney appearance

DELTA-AD

DELTA-AD

Low pressure drop, designer model

BRDA

BRDA

Double exhaust air cowl for large air flows

BRVAA

BRVAA

Roof cowl for small residential houses

BRBH with non-return damper

BRBH with non-return damper

Apartment block cowl with 4 insulated ducts for outdoor or exhaust air.

BRBH Air without non-return damper

BRBH Air without non-return damper

Apartment block cowl with 4 insulated ducts for outdoor or exhaust air.

BRLH (exhaust air)

BRLH (exhaust air)

Outdoor or exhaust air cowl with slats for a unique design.

BRTE (exhaust air)

BRTE (exhaust air)

Outdoor or exhaust air cowl with louvre, easy to customize

DELTA-DA

DELTA-DA

DELTA-UH

DELTA-UH

Good water separation, available in stock in the most common sizes

BRTE (outdoor air)

BRTE (outdoor air)

Outdoor or exhaust air cowl with louvre, easy to customize

BRIH

BRIH

Traditional outdoor air cowl

BRSI

BRSI

Traditional chimney appearance

BRLH (outdoor air)

BRLH (outdoor air)

Outdoor or exhaust air cowl with slats for a unique design.

DELTA-UD

DELTA-UD

Designer model

BRDI

BRDI

Double outdoor air cowl for large air flows

BRBH

BRBH

Apartment block cowl with 4 insulated ducts for outdoor or exhaust air.

BREA (uteluft)

BREA (uteluft)

Outdoor or exhaust air cowl with a very low pressure drop for e.g. smoke evacuation.

BRKA (outdoor air)

BRKA (outdoor air)

Outdoor or exhaust air hood for small, low velocity air flows

DELTA-DU

DELTA-DU

DELTA-KH

DELTA-KH

Low pressure drop, available in stock in the most common sizes

BRKH

BRKH

Traditional combination cowl

BRSK

BRSK

Traditional chimney appearance

BRVKA

BRVKA

Combination cowl for small residential houses

BRVHA

BRVHA

Wall cowl

DELTA-KD

DELTA-KD

Low pressure drop, designer model

MANDATORY (enter the desired air flow in l/s or m3/h):

Air flow

l/s
m3/h

OPTIONAL (Select the desired pressure drop and/or the desired size):

Pressure drop

from
to

and / or

Size

Step 2 – Suitable products

The following products meet the values you have chosen. Select the product to complete your sizing.

Is within the recommended areas of use

Is not within the recommended areas of use

Unfortunately, no suitable products were found