AS-K – Freezer rooms

No heat

Electric heat

EC Fan

A red loaded truck passing through an opening into a freezer. Above the opening, there is a Masterveil AS-K Airstop air curtain, creating an invisible door that retains the cold in the freezer room.
Masterveil AS-K airstop air curtain installed above a blue freezer door with a red truck exiting the freezer through the open door.
Masterveil AS-K Airstop flat horizontal air curtain installed above a high-speed door in a freezer, designed to prevent obstruction of another opening.
Four Masterveil AS-K Airstop fan box horizontal air curtains installed in freezers.
Masterveil AS-K Airstop fan box horizontal air curtain above a closed freezer door.
Masterveil AS-K Airstop double standing air curtains in hygienic stainless steel in a meat production facility.
Masterveil AS-K airstop air curtain installed above a door leading into a freezer warehouse.
Masterveil AS-K airstop air curtain with electric heat at a blue high-speed door into a freezer.
Masterveil AS-K Airstop horizontal air curtain in stainless steel installed in a freezer warehouse above a high-speed door.
Masterveil AS-K airstop horizontal air curtains installed at an opening to a shock freezer.
Masterveil AS-K airstop horizontal air curtain installed at the opening to a freezer. In front of the door, there is a conveyor belt.
Masterveil airstop horizontal air curtain for freezer room.
Masterveil AS-K airstop double standing flat drum air curtains installed to maintain the correct temperature in the freezer warehouse

Optimal thermal protection of openings for Medium and Large Cooling and Freezing Rooms

For medium and large freezer rooms, the AS-K is the right choice. Available in several performance versions with or without electric heating and customized dimensions. The system consists of a standalone fan unit and air curtains outblow plenum connected with duct. Outblow plenums based upon Special nozzles with knife jet technology provide high efficiency and effective air control in different temperature zones.

Product information

Flexible Installation, and Energy-Efficient Air curtain Solutions for Freezer Rooms

Air curtain drums

For AS-K freezer rooms, air curtain drums are available in sizes from ⌀250 to ⌀400.

For smaller or larger airflows, we offer standard models S. ⌀250, S. ⌀315, and S. ⌀400. We also have circular air curtain drums (C. ⌀250, C. ⌀315, and C. ⌀400) for specific installation requirements, as well as square and rectangular models (F.250, F.315, and F.400) to suit unique conditions. For installations with limited height, such as between a suspended ceiling and a doorway, we can design air curtain drums with a low overall height.

We also offer flexibility in installation. The spiral duct from the fan unit can be connected to any point on the air curtain drum, and the drum can be equipped with an extended nozzle for easy integration with suspended ceilings.

Contact us:

If you have special installation requirements, do not hesitate to contact us. We will gladly help you find the perfect air curtain solution.

Key features

  • Choose from five different sizes of fan units, with capacities ranging from 3500 m³/h up to 7000 m³/h.
  • Install side-blowing or overhead air curtains, depending on your preferences and needs.
  • The standalone fan unit delivers high performance to ensure efficiency and reliability.
  • The advanced airstop technology provides effective control of the air jet.
  • Choose between electric heating or without heating.
  • The unit has the capacity to operate one or more air curtains, providing increased flexibility.
  • Suitable for door heights of up to approximately 5 meters.
  • Available in any RAL color or in stainless steel finish.

Technical Data

AS 531KAS 535KAS 40KAS 45KAS 50K
Installation typeFanbox with air curtain drumFanbox with air
curtain drum
Fanbox with air curtain drumFanbox with air curtain drumFanbox with air curtain drum
Max door height5 meter5 meter5 meter5 meter5 meter
Standard color (Air curtain drum)RAL 9010RAL 9010RAL 9010RAL 9010RAL 9010
Standard material (Fanbox)GalvanizedGalvanizedGalvanizedGalvanizedGalvanized
Length OL-curtain drum (**)Door width + approx. 100mmDoor width + approx. 100mmDoor width + approx. 100mmDoor width + approx. 100mmDoor width + approx. 100mm
Length DS-curtain drums (**)Door height + approx. 50mmDoor height + approx. 50mmDoor height + approx. 50mmDoor height + approx. 50mmDoor height + approx. 50mm
Diminsion OL-curtain drum (***)250mm315mm315mm400mm400mm
Diminsion DS-curtain drum (***)250mm250mm250mm315mm315mm
Length (Fanbox)See drawingSee drawingSee drawingSee drawingSee drawing
Height (Fanbox)See drawingSee drawingSee drawingSee drawingSee drawing
Depth (Fanbox)See drawingSee drawingSee drawingSee drawingSee drawing
Airflow3 500 m³/h4 000 m³/h5 000 m³/h6 000 m³/h7 000 m³/h
NozzleAirstopAirstopAirstopAirstopAirstop
Voltage V400400400400400
Power motor kW2,52,52,33,55,2
Motor current A3,93,83,55,48
Frequency Hz5050505050
IP5454545454
(*) The possible height of the door depends on its width.
(**) Horizontal air curtain drum = OL and Double standing air curtain drums = DS
(***) Diameter = Connection size of the air curtain drum