Louvres, Hatches & Air Ducts

In short

We supply motorised louvres, hatches, louvre light and water filters, and semi-circular galvanised air ducts. The louvres are insulated with 20 mm Polyfoam, sealed with brush strips and come with a 240 V actuator, giving positive air control for ambient and refrigerated systems. Air ducts run up to 30 metres.

Air Ducts

The semi circular air ducts are suitable for the ventilation of agricultural products, such as potatoes, onions, carrots and tuberous products.

The semi circular air ducts are made of high-quality galvanised sheet steel, which ensures a long service life. Tolsma has manufactured these air ducts for over 30 years.

Duct length up to 30 metres.

TT ventilation ducts are assembled from thirteen different models. This enables total lengths up to 30 metres to be constructed. The AC or EC fans can be placed directly in front of the ventilation canal.

The advantages of the Tolsma-Grisnich semi circular air ducts:

  • Excellent air distribution
  • Product-friendly
  • Easy to install
  • Guaranteed long life.

Louvres

Motorised louvres are used to provide positive air control in both ambient and refrigerated cooling systems, since Farm Electronics firmly believe in the benefits of combining the ambient ventilation and refrigeration cooling systems

Fully insulated with overlapping 20mm Polyfoam insulation on the reverse face (to minimise cold bridging) with brush seal strips on the blade ends and unique individually sprung blades to eliminate slack in the drive linkages, the louvres have minimal air leakage. All louvres come complete with a 240v drive actuator.

Louvre light & Water Filters

Farm Electronics Louvre Light & Water filters are manufactured from black PVC waveform light filter cassettes encased in
a galvanised steel support frame. Simply fitted directly to the flange of the louvre, the filters will prevent direct sunlight and water from entering through the louvres

Louvre Installation Detail

The example louvre installation detail right shows the fitting of the louvre to the sheeting rails of the building. Between the sheeting rails 50x50x3 Angle iron is to be fitted, the louvre is then fixed to this angle iron.

Diagram of two louvre fitting options: on sheeting rails with 50x50x3 angle iron, or recessed

Fixed & Motorised Louvres & Hatches

Read Brochure

Questions about louvres and air ducts

Why use motorised louvres?

They give positive air control in both ambient and refrigerated cooling systems, so ambient ventilation and refrigeration can be combined. See motorised louvres.

Louvre light and water filters, made from black PVC waveform cassettes in a galvanised frame, fit straight onto the louvre flange.

Up to 30 metres, built from thirteen different models, with AC or EC fans placed directly in front of the duct.

To 50 x 50 x 3 angle iron fixed between the building’s sheeting rails, as the installation detail shows.

Next step: see louvres in a store layout

See where louvres sit in our potato store layouts, or read the louvres and hatches brochure above.