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Circular roof cowl

WD-CS
Photo of product WD-CS

 

WD- CS circular roof cowls are made from
galvanized steel sheet in the standard version. The bottom
part is a male connector for mounting to the roof base.
The product is available on request with a female connection
and/or made from stainless steel or aluminium sheet.

Sprawdź parametry techniczne produktu

Round roof elements - Products range
Miniature picture Product code Name of product Files to download
Photo of product Exhaust/supply roof cowl VHLA-S

Exhaust/supply roof cowl

VHLA-S Exhaust/supply roof cowl is made of segments, its
modern and sleek design enhances the aesthetics of any project.
Stainless steel and aluminium versions are now available as
well as wider range of diameters thanks to newly implemented
technology processes. VHLA-S exhaust/supply roof cowls can
be powder coated in any RAL colour on special order.

Exhaust/supply roof cowl
Photo of product Exhaust air tower VHLA-ST

Exhaust air tower

VHLA-ST Supply air/ exhaust air tower is manufactured
of segments, designed for ventilation duct installation.
Thanks to a higher housing base in comparison to e.g.
VHLA-S model, the ventilation tower does not supply air
near ground. VHLA-ST design and a multitude of material
versions - galvanised sheet, powder-coated, stainless steel
or aluminum - make this model architecturally fit into the
landscape of a modern housing estate or office complex or
home installation of a ground heat exchanger.

Exhaust air tower
Photo of product Circular lamella hood VHLA

Circular lamella hood

 

VHLA roof air intakes/exhaust vents are made from galvanized
steel. The carefully designed form and finish provide a
great visual impact and a splendid match for the building's
architectural style.
The VHLA roof air intakes/exhaust vents fit ducts with Ød.
The standard diameter Ød is a male connection size, and the
standard diameter ØD is a double-sided female connection
size for installation of VHLA units on SPRI pre-insulated ducts
with 50 mm of mineral wool.
The product can also be painted in any RAL colour.

Circular lamella hood
Photo of product Rotating chimney cowls WD-TURBO

Rotating chimney cowls

 

WD-TURBO roof turbine ventilators cap the exhaust end of
ventilation ductwork or a flue stack.
They spin by the force of wind. By this effect and the specially
designed geometry of the turbine bell vanes, the ventilator
sucks out the air (or flue gas, as the case may be) to the
outside.
The roof turbine ventilators enhance the stack draught effect
and provide protection against ingress of rain, snow and
condensation.

Rotating chimney cowls
Photo of product Circular roof cowl WD-CS

Circular roof cowl

 

WD- CS circular roof cowls are made from
galvanized steel sheet in the standard version. The bottom
part is a male connector for mounting to the roof base.
The product is available on request with a female connection
and/or made from stainless steel or aluminium sheet.

Circular roof cowl
Photo of product Roof base for round ductwork systems PD-B1

Roof base for round ductwork systems

 

The type B1 lightweight roof bases are suitable for round
ductwork systems. The standard version is made from
galvanized steel sheet and designed for flat roofs. The top
part of the roof base comes with a FLS steel flange in the
standard version. The roof base is available on request with a
male connector or a connector provided with an EPDM rubber
gasket. Other versions available on request include roof bases
designed for sloping roofs or made from stainless steel sheet
or aluminium sheet. The roof base is a perfect match for roof
intakes, roof exhaust vents, and roof ventilators (fans).

Roof base for round ductwork systems
Photo of product Roof base with duct for spiral ductwork systems PD-B2

Roof base with duct for spiral ductwork systems

 

The type B2 roof bases are designed for flat roofs. Versions
available on request can be installed on roof slopes up to 30
degrees. The top part of the product has a FLS steel flange for
installation of a roof air intake, a roof exhaust vent, a silencer,
or a roof ventilator (fan). The steel flange provides a sturdy
joint which can easily withstand vibration generated by fan
units. Versions available on request can also have a male
connection which can be provided with an EPDM gasket for
female-connection air intake units/exhaust vents in ventilation
systems not exposed to high vibration levels or strong gusts
of wind. The bottom of the roof base is designed for direct
fastening to spiral ducts, female connectors and fittings. The
product can be made from stainless steel or aluminium sheet
on request (aluminium roof bases are available with a male
connection only).

 

Roof base with duct for spiral ductwork systems
Photo of product PD-B2 roof base drip tray PD-DRIP-T

PD-B2 roof base drip tray


PD-DRIP-T drip trays drain condensed water away from a
roof base. Water (or condensate) flows down the inner walls
of the roof base duct to the bottom of the drip tray, from
which it slowly evaporates. All surfaces in contact with the
pooling water are thoroughly protected against corrosion.
The centre of the drip tray has a wire mesh to stop large debris.
The wire mesh allows free air circulation. The top-end
diameter has a female connection size for mounting the roof base duct.
This product is recommended for PD-B2 roof bases.

PD-B2 roof base drip tray
Photo of product Roof base with damper PD-B3

Roof base with damper


The type B3 roof bases are made from galvanized sheet in the
standard version and designed for installation on flat roofs.
The top and bottom parts are provided with FLS steel flanges
by default. The roof base can be ordered with an EPDM gasket
at one or both ends. Other versions available on request
include roof bases designed for sloping roofs and made from
stainless steel sheet or aluminium sheet. The standard version
of this roof base comes with a DAS shutoff damper; a DAT
damper (air tightness class 4) can be used on request. The roof
base can be installed as a standalone ventilation unit, e.g. in
production buildings. The bottom part of the roof base can
work as a roof air intake or a roof exhaust vent; if a roof fan
or an air intake / exhaust is mounted to the FLS steel flange
of the roof base, the assembly can work as a typical roof vent.
An Alnor, Belimo or Siemens actuator can be added to the
roof base's damper for remote control of the unit.

Roof base with damper
Photo of product Sloping roof base TAGF

Sloping roof base


TAGF roof bases are designed for installation of roof air intakes
or exhaust vents without using steel flanges. Both ends of the
roof base are male connections and match fittings and roof air
intakes / exhausts provided with female connections. When
ordering, specify the roof base inclination angle suitable for
your roof slope. A roof base is a two-piece product composed
of a shifting inner duct for adjusting the height over the roof.
Once installed, the joints should be sealed, e.g. with TALT tape.
The product is also available, on special request, with female
connections or made from aluminium or stainless steel sheet

Sloping roof base
Photo of product Roof curb for round roof bases COKD

Roof curb for round roof bases

COKD roof curbs are installed on the roof surface as supports
for PD-B1, PD-B2 and PD-B3 roof bases. The product is
available in galvanized steel, stainless steel and aluminium,
plus versions with or without thermal insulation, and with a
straight duct or a bend.
The standard insulating layer thickness is 25 mm or 50 mm.
Sloping roof curbs are designed for sloping roofs.
The standard overall height of the roof curb is 500 mm. Any
overall height can be produced on request.

Roof curb for round roof bases
Photo of product Round roof exhaust vent WD-C1

Round roof exhaust vent


A roof exhaust vent serves as a roof ventilator installed over the
roof surface. The unit is usually mounted to a roof base, and
both parts of the assembly are mated with FLS steel flanges
which make the joint and the whole assembly very sturdy and
stiff to resist strong gusts of wind. Other available versions
of roof exhaust vents include male and female connection
sizes for direct connection with spiral ducts and fittings or
matching roof bases. The roof exhaust vent can be made from
aluminium sheet or stainless steel sheet, whenever special
performance or material is required.

Round roof exhaust vent
Photo of product Round roof air intake unit WD-C2

Round roof air intake unit

WD-C2 roof exhaust vents are designed to minimize the
ingress of rain into the ventilation ductwork. The available
installation methods do not differ from those used for WD-C1
units, and the sloped design allows a larger cap for better
protection against rain.

Round roof air intake unit
Photo of product Vertical roof exhaust vent WD-D

Vertical roof exhaust vent


The type D roof exhaust vents are available in galvanized steel
in the standard version. The bottom part features an FLS steel
flange for connection with the roof base.
Other connection types and sheet materials are available.
The base has a deflector for protection against snow and
drainage of water to the outside of the vent. The roof exhaust
vent requires bracing with side stays.
Since WD-D units have no standard drip features, they must
only be used in continuous air flow ventilation systems.

Vertical roof exhaust vent
Photo of product Roof exhaust vent WD-E

Roof exhaust vent


WD-E roof exhaust vents are used for rooftop termination
of the ductwork to evacuate air to the outside. The outlet is
protected against rain and snow by a sloping flange which
deflects the water onto the side walls to drain it to the roofing.
The standard roof exhaust vent is made from galvanized steel
sheet and provided with an FLS steel flange.
The product is available on request with a male or female
connection, and/or made from stainless steel or aluminium
sheet.

Roof exhaust vent
Photo of product Vertical roof exhaust vent WD-G

Vertical roof exhaust vent


The type G roof exhaust vent provides the ventilation system
with a vertical air exhaust flow. Given the overall product
height, a standard connection method is recommended, by
mating the FLS steel flanges and bracing with side cable stays.
The inner standing edge of the roof exhaust vent provides an
efficient output for the exhaust air. The standing edge also
provides a drainage surface for rain and snow water which
flows off onto the roof exhaust vent walls and then down
to the roofing surface. This eliminates any hazard of water
ingress into the ventilation ductwork.
The available versions can be made from stainless steel sheet
or aluminium sheet and with various connection styles. The
roof exhaust vent requires bracing with side stays.

Vertical roof exhaust vent
Photo of product Cylindrical roof ventilator WD-B

Cylindrical roof ventilator

The type B cylindrical roof exhaust vents are made from
galvanized steel sheet in the standard version. The bottom part
features an FLS steel flange for connection with the roof base.
Other connection types and materials are available.

Cylindrical roof ventilator
Photo of product Take-off bends with wire mesh BSAV-90

Take-off bends with wire mesh


Take-off bends are air exhaust pieces for termination of
ventilation ductwork made of spiral coiled ducts or other
round duct types. They are made of BS or BSL segmented
bends (depending on the length size) coupled by factory-made
seal and hem with an ASV-45 angle take-off provided
with wire mesh. The flared top of the take-off helps protect
against ingress of rain and snow, and the 12.7x12.7 mm
mesh protects against birds and large insects. The product is
designed for exhaust ventilation systems in which the bend
has a male connection size for joining with other compatible
ductwork pieces. Versions provided with an FLS steel flange
connection and made from stainless steel / aluminium are
available on request.

Take-off bends with wire mesh
Photo of product Outdoor vent take-off bend with wire mesh BSILN-135

Outdoor vent take-off bend with wire mesh


Round segmented take-off bends serve as roof exhaust vents
in mechanical, heat-recovery and gravity ventilation systems.
The 135-degree angle of the mouth helps protect against
ingress of rain, snow and water. The 12.7x12.7 mm mesh
protects against leaves, debris and birds. The take-off bend
can be used as an exhaust vent or an air intake unit. The male
connector fits spiral ducts and type B1 round roof bases. The
product is available on request with an FLS steel flange or a
female connector size for combining with ventilation fittings.

Outdoor vent take-off bend with wire mesh
Photo of product Straight roof air intake CD-C1

Straight roof air intake


A standard roof air intake to be installed on type B1, B2 and
B3 round roof bases. The 12.7x12.7 mm mesh protects against
leaves, debris and birds. The cap at the top protects against
rain, snow and water. The standard connection for this product
is an FLS steel flange which can be replaced with a male
connector for spiral ducts or a female connector suitable for
fittings and roof bases (with a male connection size). Such
replacement is recommended only for small diameter sizes.
The versions available in stainless steel or aluminium enable
using the air intake in non-standard ventilation systems.
The roof air intake is provided with 12.7x12.7 mm galvanized
steel wire mesh made of 1 mm wires for protection against
debris.

Straight roof air intake
Photo of product Roof cowl with mesh CD-O-P / CD-S-P / CD-P-P

Roof cowl with mesh

CD-S-P / CD-O-P / CD-P-P Supply air roof cowl is designed to
be placed on roof of residential buildings. The roof cowl has
aesthetic design made of perforated metal sheet (square holes)
and 3 types of top hats - pitched, round and flat. The mesh
ensures proper airflow and simultaneously prevents birds,
leaves and others from entering into the duct termination
point. CD-S-P / CD-O-P / CD-P-P Supply air roof cowl has few
types of connection fitted for different duct terminations.

Roof cowl with mesh
Photo of product Flared roof air intake unit CD-C2

Flared roof air intake unit


The type C2 flared roof air intake units are made from
galvanized steel sheet in the standard version. The bottom part
features an FLS steel flange for connection with the roof base.
The roof air intake is available on request with other connection
styles and/or made from stainless steel or aluminium sheet.
The roof air intake is provided with 12.7x12.7 mm galvanized
steel wire mesh made of 1 mm wires for protection against
debris.

Flared roof air intake unit
Photo of product Chimney ventilation cowls RHA

Chimney ventilation cowls

The ventilation chimney cowl is the easiest, simplest and most
budget-friendly all-rounder of all possible vertical air exhaust
ends in installation systems built with round ducts and fittings.
The product is available in 3 different sizes, each for a specific
diameter range. The product is installed by bending down the
3 or 4 legs to fit the connected spiral duct, inserting the legs
down to the stop, and fastening them with WGO screws or
blind rivets. Optional versions are available on request, made
from stainless steel sheet or aluminium sheet.

Chimney ventilation cowls
Photo of product Chimney venitlation cowls VHK

Chimney venitlation cowls

VHK ventilation chimney cowls offer a great solution for roof air
intakes or exhausts in industrial or housing ventilation systems.
They are made from galvanized steel sheet in the standard
version; non-standard versions in stainless steel sheet,
aluminium sheet or plastic-coated steel sheet (in various
colours) are available on request. The intake mouth is protected
by a steel mesh. The standard version has a connector port;
a flanged version is available on request.

Chimney venitlation cowls
Photo of product Jet cowls HAN/HAF

Jet cowls

HAN/HAF roof exhaust units are suitable for both industrial
and housing ventilation systems.
The air is exhausted in a vertical stream to avoid contamination
of the air and the nearby roof surface. This roof exhaust unit is
so efficient that roof air intakes can be installed very close by.
The standard version is made from galvanized steel sheet;
non-standard versions in stainless steel sheet, aluminium sheet,
or plastic-coated steel sheet (in various colours) are available
on request. The roof exhaust unit is topped with a 1/2-inch
wire mesh and has an inner deflector flange for protection
against snow and drainage of water to the outside of the vent.
Standard HAN roof exhaust units are manufactured with male
flanges, female flanges, and double-sided female connections
(for sliding over a duct).
Standard HAF roof exhaust units come with FLS steel
flanges.

Jet cowls
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