```html Fixed black ventilation grille (17x17 cm) with pre-frame. Made of durable aluminum, ideal for air conditioning and extraction. Elegant design and easy installation. ```

```html White fixed ventilation grille (17x17 cm) with pre-frame included. Ideal for air conditioning and extraction, it offers a constant airflow and a professional aesthetic finish, and is easy to install. ```

```html Fixed black grille, 11x17 cm, with pre-frame included. Ideal for air conditioning and ventilation systems, it combines a modern and elegant design with efficient airflow and simplified installation. ```

White fixed grille (11x17 cm) with pre-frame for optimal ventilation. Easy wall or ceiling installation, ideal for air conditioning and extraction in any room. Durable material and discreet design.

```html The 120mm inlet (ALI_EMB-120) is essential for connecting ducts with front/corner diffusers. It ensures a tight, aerodynamic transition and optimizes airflow for maximum energy efficiency and reduced noise in your HVAC system. ```

```html Black angled diffuser, 500 x 500 mm (ALI_RED 50 X 50 N). Ideal for efficient air conditioning and modern design in offices and shops. Ensures homogeneous airflow and energy savings. ```

```html 500x500 mm white angled air diffuser for climate control (Ref: ALI_RED 50 X 50 B). Ideal for uniform and efficient air distribution in suspended ceilings. Made of robust material for quiet and long-lasting performance. ```

```html Black rectangular air conditioning diffuser, 1000 x 63 mm (ALI_RED 1000-N). Ideal for even and quiet air distribution in air conditioning systems. Modern and elegant design for integration into ceilings and walls. ```

```html Discover the complete Alixena 2025 catalog. Explore our wide range of products and new arrivals at the following link. ```

```html Black rectangular air diffuser (800x63 mm) ALI_RED 180-N. Ideal for homogeneous and quiet air distribution in HVAC systems. Made of high-strength aluminum for an aesthetic and durable finish. ```

White rectangular air conditioning diffuser (800x63 mm) for efficient and even air distribution. Modern and discreet design, made of high-strength aluminum for residential and commercial air conditioning.

```html Black rectangular air conditioning diffuser (600x63 mm) - Ref: ALI_RED 160-N. Ideal for optimizing air distribution with a modern design and high efficiency in air conditioning systems. ```