Is a protective mesh necessary for facade external grilles?

Yes, a protective mesh is essential to prevent birds, rodents, and large insects from entering your ventilation system. Without a mesh, small animals can build nests in the warm ducts, completely blocking airflow and causing hygiene issues. It is important to choose grilles with the right mesh density – fine enough for protection, but not so dense that it quickly clogs with dust and lint.

What is the difference between air intake and exhaust grilles?

Air intake grilles usually have special features to deflect raindrops, while exhaust grilles are shaped to direct the airflow away from the facade. Although many standard models are universal and suit both functions, specialized exhaust hoods (often with a 'nose') ensure that the exhausted warm, moist air does not condense on the house wall, preventing dirt marks over time.

What is the best material for external grilles?

Stainless steel or powder-coated aluminum external grilles last the longest and maintain their aesthetic appearance. Cheap plastic models quickly fade, crack, and become brittle due to direct sunlight (UV rays) and temperature fluctuations. Metal grilles withstand harsh winters and hot summers, require less maintenance, and look like new for years.

External Grilles

Nemokama konsultacijaOficiali garantija

Oficialus atstovasGreitas pristatymas

Profesionalus montavimas

No products here yet. If you are looking for a specific model, contact us.

Often bought together with

Heat Recovery Units

Protect your ventilation system from harsh weather and pests without sacrificing facade aesthetics. Our facade external grilles ensure reliable air intake and exhaust, featuring durable materials and special hoods that direct rainwater away from your walls.

Problem: Open Ducts and Facade Damage

Imagine an autumn storm where wind and rain violently lash against your house walls. If your ventilation system openings are covered with low-quality grilles, water easily penetrates the ducts. Accumulated moisture inside creates ideal conditions for mold, which silently spreads throughout the house.

Aesthetic issues also become apparent very quickly. Poorly designed exhaust grilles allow warm, moist air to rise directly along the wall. In winter, this turns into icicles on the facade, and after a few years – into dark, uncleanable marks of dirt and lichen that ruin expensive exterior finishes.

Change: A Safe System and Flawless Appearance

Properly selected external grilles act as a reliable shield between your home and the elements. The special louvered design prevents raindrops from entering even during strong crosswinds, and the built-in mesh securely catches leaves, insects, and birds.

Your house facade remains clean and elegant for years. By using grilles with hoods and drip edges, condensation and rainwater are directed away from the wall. By choosing the right shade, you can perfectly integrate these technical elements into your exterior design.

Complete moisture protection – investing in high-quality stainless steel grilles not only preserves the beauty of your facade but also protects the entire ventilation system from costly corrosion and mold damage.

An external grille is not just a decorative cover – it is an important aerodynamic element. When selecting a product, you must consider the power of the ventilation unit and the building's architecture. Here are the key parameters:

Connection Diameter (mm) - the grille spigot must perfectly match the diameter of your main duct (usually 125, 160, or 200 mm). Grilles that are too small will cause high air resistance and noise.
Free Area (%) - this is an indicator of airflow efficiency. The denser the louvers and mesh, the less air passes through. Choose models with an optimal design that do not restrict flow or force the HRV to work harder.
Material and Coating - avoid cheap plastic. Choose stainless steel or powder-coated aluminum. These materials are UV resistant, do not fade, and do not rust even in humid climates.
Facade Staining Protection - for exhaust openings, it is essential to choose grilles with an extended hood ('nose') and a deflecting edge, ensuring that dirty air is thrown away from the wall finish.

Universal or Specialized Models?

On the market, you will find both universal grilles and ones specifically meant for intake or exhaust. If your system generates a high airflow (over 300 m3/h), we recommend using separate specialized models. Before purchasing, ensure the grilles easily connect to your chosen insulated ducts or galvanized steel system components.

Installation Steps for Perfect Airtightness

Even the best grilles will not protect the facade if installed incorrectly. The primary goal is to avoid thermal bridges and water ingress between the duct and the wall structure.

Duct Slope - the pipe in the wall to which the grille connects must have at least a 1-2 degree slope towards the outside. This ensures any accidental condensation drains outwards, not indoors.
Maintaining Distances - if intake and exhaust grilles are mounted on the same wall, a minimum distance of 3 meters must be maintained between them so fresh air is not mixed with exhaust air.
Gap Sealing - after inserting the grille spigot into the duct, be sure to seal the remaining gap between the grille frame and the facade finish using an outdoor-resistant sealant.

Maintenance Without Much Effort

Maintaining external grilles is quick and requires minimal effort. It is enough to visually inspect them once a year – ideally in late autumn – to ensure the protective mesh is not covered with leaves, poplar fluff, or heavy dust. A clogged mesh severely reduces the efficiency of your heat recovery unit and increases electricity consumption. By clearing the debris with a soft brush, the system will operate at full capacity again.

External Grilles

Often bought together with

Problem: Open Ducts and Facade Damage

Change: A Safe System and Flawless Appearance

Universal or Specialized Models?

Installation Steps for Perfect Airtightness

Maintenance Without Much Effort

Frequently Asked Questions

About

Help

Services

Resources

Often bought together with