Persienne RAL Standard and color of your choice
The persienne sheet metal is available in the entire RAL color range and painted according to the customer's choice. Available in RAL 3024 Bright Red for high visibility contrast, or RAL 1018 Zinc Yellow, the persienne can also blend into the landscape with RAL 6001 Emerald Green or RAL 5019 Capri Blue. Classic colors such as RAL 9010, RAL 7016 – RAL 7046 – RAL 9004 are of course available. The choice of color will depend on the decor chosen by the interior designer of the hotel or restaurant you wish to fit out. When installed outside the building, the persienne the color chosen by the urban planning department to comply with the local urban planning regulations.
persienne sheet persienne is used everywhere, so regularly that we end up not noticing it around us anymore; it blends into the landscape. To achieve this, you need to choose the right color for each application:
Weather Protection: Louvered metal sheets can be used as weather protection, allowing air to circulate while preventing rain, snow, or other outdoor elements from entering. They are often used for outdoor shelters, warehouses, and storage sheds for town halls or cities. Located on the outskirts of residential areas, architects clad these municipal hangars with persienne metal sheeting.
Industrial Applications: In industrial environments located in commercial zones, persienne sheet metal persienne used for ventilation in facilities, protective screens, or even as a decorative element in structures to conceal pipes, wires, and industrial production equipment from view.
Sun Screens: Louvered panels are designed to filter sunlight while allowing hot air to ventilate. For a window exposed to the sun in the middle of summer, the persienne block and store the sun's heat, then directly evacuate it through the ventilation slots without adding additional heat to the building. This contributes to better indoor temperature control.
Machine safety: In certain technical applications, persienne sheet persienne be used as a safety screen, providing a visual barrier while allowing adequate ventilation and preventing public access to technical installations. This is important in train stations, subway stations, and airports, where all types of people may be present.
Protection of Equipment Against Intrusion and Vandalism. In Vigipirate risk management, shutters can be used to protect outdoor equipment and people from the threat of terrorism, providing both security and visual concealment.
For outdoor installations on the outskirts of towns, town halls may favor louvred metal sheets for outdoor installations such as pergolas, awnings, shelters, sheds, kiosks, parking booths, porches, or covered courtyards, offering protection from the elements while maintaining good air circulation to prevent water stagnation or wood deterioration. Drying materials, including concrete slabs, is necessary for their durability and longevity. In an urban environment, it is not feasible to install air extraction systems, so natural ventilation of covered spaces is a necessity. Louvered panels offer a balance between functionality, safety, and aesthetics in various urban contexts.
Limits on the use of persienne
persienne are not suitable for all uses. Their industrial design, dating back to around 1850, led to their rapid spread throughout Europe to protect homes and machinery, without any particular focus on aesthetics. There has been very little technical or aesthetic development over the past two centuries, as their effectiveness has remained unbeatable for 150 years. Be careful when covering the persienne : the main function of the persienne 3D shape persienne to prevent slightly oblique rainwater from penetrating. This is an advantage, but also its biggest disadvantage.
Here are the limitations on the use of a persienne :
- Perforated persienne sheets persienne metal sheets with regular three-dimensional slotted perforations. Certain limitations must be taken into account when using them or in specific cases.
- persienne are not watertight! In the event of heavy rain with gusts of wind, water can enter at an angle. Similarly, in the event of flooding, the persienne the water to flow through without interruption.
- Privacy ensured by the direction of the gaze: Due to its 3D perforation, persienne sheet persienne offers very partial visibility through the sheet metal in both directions, both from the outside to the inside, which corresponds to the main need for privacy, but unfortunately also from the inside to the outside, which is a great shame. If visual privacy is a concern, other cladding options or perforated sheet metal window treatments are available to reduce prying eyes while providing comfort to the occupants of the home.
- Limited Thermal and Acoustic Protection: Louvered panels are not generally designed to provide significant thermal or acoustic insulation.
- High security: Louvered panels add an element of security by concealing the view from the inside, providing robust initial protection against intrusion or vandalism. However, in some cases, it is necessary to be able to see what is happening inside the secure area in order to respond more quickly in the event of an intrusion, otherwise emergency services cannot operate.
- Limited Light Control Options: While louvered panels help reduce the impact of natural light, they do not provide the same level of control as adjustable blinds or other light management solutions.
- Subjective Aesthetic Appeal: The aesthetic appeal of louvered panels can be considered positive in certain applications, but they may not suit all tastes or architectural styles. Sometimes considered too industrial, we have developed aesthetic solutions for architects.
- persienne do not stop humid air! If the weather is foggy and the ambient air is laden with microdroplets of water, then this air humidity level of 60% to 80% will also be present on the other side of the persienne wall.
It is essential to take these limitations into account when specifying and using louvered sheets, choosing materials and designs suited to the specific needs of the intended application.
Which type of persienne should you choose persienne ventilation?
persienne are used everywhere: train station concourses, hotel rooms, underground parking lots. The issue of natural ventilation and air quality control is omnipresent around us. persienne metal sheets persienne used as decorative elements to conceal the mechanism from view. Pipes, air extraction ducts, and air treatment machines are not particularly attractive, so covering them with persienne an aesthetic finish. In the paragraphs below, you will find examples of how all types of persienne are used, from everyday to technical applications, in standard or custom-made modules.

Persienne public spaces
Dampere perforated persienne sheet metalDampere in all public spaces, without exception. It is the best-selling perforated sheet metal for ventilation and air circulation because it is also used in industrial, technical, mechanical, and agricultural applications thanks to its high performance in controlling air flow. For small spaces of a few square meters, you will find inexpensive louvered ventilation grilles for hotel rooms, hospitals, or clinics. The same applies to stores, restaurants, cafes, and bars, where we find the same persienne grilles. The larger the volume of air to be treated, the more important persienne adapt the size of the persienne grille. When it comes to public places such as shopping centers, museums, theaters, or movie theaters, conference rooms, and performance halls, it is more a question of managing the indoor climate using HVAC modules, which are even more effective for train stations, airports, and swimming pools because the technology is more complex.
Persienne urban electrical cabinet
Dampere perforated persienne sheet metalDampere in the construction of urban electrical cabinets. When used outdoors, the distribution box is used for public lighting, but also for managing the electrical circuit, communication, and telecommunications. For all these functions, there is a potential need for ventilation due to rainwater infiltration, which must be dried, but also the possibility of the circuits overheating, especially in summer. In the case of a capacitor or electrical transformer, the temperature rise must be reduced by a persienne door, which provides a large air passage area.
Persienne or basement window
persienne ventilates confined spaces in historic monuments, which are often surrounded by earth and therefore capable of collecting water stored in the ground. By ensuring continuous ventilation from the cellar to the upper floors, we prevent mold growth and damage caused by humidity. With a simple persienne grille, we increase the lifespan of the monument without the need for regular maintenance work.
Local trash can Persienne
Outdoor shelters in cities and bulky shelters for condominium communities are a recurring problem for property managers. Garbage cans are never pleasant, neither your own nor your neighbors'. When there is enough outdoor space, a perforated metal garbage enclosure is provided to conceal the waste containers, which are grouped together in a single location that is accessible but far enough away from living areas to reduce nuisance. The use of an outdoor waste shelter makes it easier to clean with water to prevent the accumulation of odors and dirt.
In other cases, it is important to ensure access control via a door restricted to local residents in order to prevent disorder and overflowing waste containers. The waste storage area may be completely enclosed, either with a roof or within a concrete building. In this case, even greater attention must be paid to adequate lighting, safety, and hygiene.Ventilation of the garbage room through persienne is a priority, both for humidity, odors, insects, and pests. Ventilation systems use air to renew the indoor air, eliminate odors, and maintain good air quality in these buildings.
Formwork for air conditioner
Individual air conditioners are commonly sold to businesses and individuals. It is possible to purchase an air conditioner starting at €2,000 to cool the air in your home. Homes exposed to high summer temperatures require even more cooling when located in the city, where there is little air circulation. To avoid spoiling the appearance of town and village facades, an air conditioner casing can be used to conceal the technical components behind a persienne metal persienne . In some French villages known for their distinctive colors, the persienne can be custom painted persienne RAL colors to match the theme of the town, its old stone buildings, and its historic monuments.
How well does the persienne sheet metal perform?
Natural ventilation occurs when cold air moves toward warm air. Dual application in a house:
- The cold air in the basement moves toward the warm air on the upper floors, provided there is sunlight, heating, or some other factor causing a temperature difference.
- The cold air in the room replaces the warm air on a radiator, creating natural convection.
The Dampere persienne grille Dampere remarkable performance thanks to one key advantage. Its air permeability of around 30% promotes efficient air exchange through the grille. The heat exchange performance of the panels is good if the perforated ventilation sheet metal allows at least 30% air passage. The arrangement of persienne louvers persienne air circulation, making it much more efficient than a simple perforated sheet with the same 30% transparency rate. Air exchange works even better thanks to the temperature gradient. Thus, in the case of cellar ventilation or radiator heat exchange, the persienne sheet metal persienne very well. The air circulation around the radiator captures the stored heat and transfers it into the living space. persienne sheet metal persienne this circulation of warm air through the orientation and shape of its holes. Whether for a cellar door or to conceal a radiator,Dampere perforated persienne sheet metalDampere the best choice in terms of performance.
Why choose aDampere persienne panel forDampere radiator cover?
When seeking to improve the heat transfer of a cast iron radiator, it is crucial to ensure excellent thermal conduction through the wall to facilitate exchange with the hot air contained within the radiator structure. Perforated metal supports have minimal thermal inertia, which promotes efficient heat conduction. Due to this high thermal conductivity, most of the energy produced by the heating system is diffused directly into the room, without creating a thermal insulation effect or slowing down heat diffusion. Since the radiator is made of heat-conducting metal, it facilitates the rapid exchange of heat contained in the circulating water, thus providing a large heat exchange area and optimal air circulation through the radiator. The 3D shape of the persienne slot controls the air flow, creating a laminar, regular, and undisturbed movement. This allows fresh outside air to enter the confined, warm space of the radiator in a steady stream and then quickly escape from the top, ensuring optimal circulation.
By allowing warm air to circulate freely, louvered windows contribute to a more even distribution of heat throughout the room. This helps to avoid cold and warm spots, creating a more comfortable thermal environment.
Shutters can also offer some protection against risks associated with radiators, such as accidental burns. They act as a physical barrier between the hot radiator and the occupants of the room. This barrier also hides the radiator from view. This means that you can have different brands, styles, and colors of radiators in the same room without them being visible to you!
This slightly industrial style of decor is used in a variety of spaces, including homes, offices, lofts, and commercial spaces to highlight its raw appearance. The contrast between the raw design and the softer textures of the furnishings creates an interesting effect.
Scales and other decorative RAL louvers
The louvers can be found in a modern interior space, around a bar or in a restaurant dining room, or mounted on the wall of a museum exhibit. To avoid compromising your decor, we offer persienne in the RAL color of your choice and in custom sizes. This custom cut will ensure that your design fits seamlessly with the look you have imagined.
Similarly, when it comes to exterior facade cladding, you may be in the historic center of a city surrounded by beautiful buildings, a cathedral, or historic monuments where materials and colors are very important. In these city centers, the color of the shading panels and ventilation parts is important. Our perforated metal persienne configurator will adapt the RAL color according to your choices.






Decorative louvers are available in a wide range of metal products. Metal scales are a component of persienne used in a variety of high-end projects where light management, transparency, and visual privacy are important. Security is ensured by the impact- and intrusion-resistant metal slat. In the event of a Vigipirate threat, the Alter Malaika DAMPERE decorative slat pattern DAMPERE both visual opacity to prevent prying eyes and the view of neighbors without blocking the view to the outside for building users. This means there is no heavy, opaque metal barrier effect from the inside. You can see this in the project carried out for the Reims museum's storage facilities, where the entrance, facade, and sunshades are clad with persienne anodized aluminum scalepersienne . The effect is stunning when the sun moves around the facade, creating multi-colored reflections.




