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Complete Guide to Choosing the Ideal Linear Grille According to Wall, Frame, and Air Direction
Choosing the right linear grille can seem complicated if you’re not sure which model best fits your wall, the aesthetic you want, and the airflow you need.
The range of linear grilles offers solutions tailored to every situation, combining design and functionality. They can also be used for both supply and return, making them very flexible depending on the project and HVAC requirements.
Below, we explain the key aspects to consider: wall type, frame size, and air direction.
Compatibility by Wall Type and Frame Size
When selecting a linear grille, it is essential to consider the wall type and frame size.
In general:
- Thicker frames make installation easier and allow small imperfections in the opening to be absorbed.
- Thinner frames offer a more discreet and elegant finish but require greater precision during installation.
This way, you can choose a model that combines functionality, aesthetics, and ease of installation.
- Brick / Concrete
- Frame 25 mm: E-LO/A, E-LO/AD, E-LO/B, E-LO/BD
- Frame 15 mm: E-LO/ATPD, E-LO/ATP, E-LO/BTPD, E-LO/BTP, E-LO/ATPDESF, E-LO/BTPDESF
- Frame 12.5 mm: E-LO/AE, E-LO/AED, E-LO/BE, E-LO/BED
- Wood or Wood-Clad Walls
- Frame 25 mm: E-LO/A, E-LO/AD, E-LO/B, E-LO/BD
- Frame 15 mm: E-LO/ATPD, E-LO/ATP, E-LO/BTPD, E-LO/BTP, E-LO/ATPDESF, E-LO/BTPDESF
- Frame 12.5 mm: E-LO/AE, E-LO/AED, E-LO/BE, E-LO/BED
- Frame 6 mm: E-LO/ADES, E-LO/BDES
- Plasterboard (Drywall)
- Frame 25 mm: E-LO/A, E-LO/AD, E-LO/B, E-LO/BD
- Frame 15 mm: E-LO/ATPYDES, E-LO/BTPYDES
- Frame 8 mm: E-LO/ATPY, E-LO/BTPY, E-LO/ATPEY, E-LO/ATPEY-DES, E-LO/BTPEY, E-LO/BTPEY-DES
- Frameless: E-LS/A, E-LS/B
For plasterboard, models with Y-fixation (E-LO/ATPY, E-LO/BTPY, E-LO/ATPEY, E-LO/BTPEY) are the most recommended, as they don’t require altering the profiles that support the panels. They simplify installation and avoid structural issues.
Aesthetic Considerations: Which Grille Looks Best?
A linear grille looks more elegant the narrower its frame, although this increases the difficulty of installation. Here’s an approximate ranking balancing aesthetics and ease of installation:
- E-LS/A and E-LS/B (frameless): offer maximum visual integration but require very precise installation, making them the most demanding to place.
- 6 mm frame (E-LO/ADES, E-LO/BDES): elegant and balanced grilles. Easier to install than frameless models, especially on wooden walls where adjusting the opening is simpler.
- 8 mm frame (E-LO/ATPY, E-LO/ATPEY, etc.): maintain a good appearance and require careful installation. The frame protrudes only 2 mm beyond the fins and is usually installed on plasterboard walls or ceilings, leaving a small correction margin of about 4 mm.
- 12.5–15 mm frame (E-LO/AE, E-LO/ATP, E-LO/ATPY): balance aesthetics and ease of installation. The frame measures 12.5 mm for E-LO/AE and 15 mm for the other models.
- 25 mm frame: easiest to install, but the frame is roughly four times wider than the fins, giving it more visual presence. Since linear grilles usually have few fins, the frame stands out more.
Air Direction: Types of Fins
- Fins A (0º): distribute air directly and evenly. Ideal for conditioning the entire room.
- Fins B (20º): direct air to specific areas, avoiding direct drafts and allowing localized control.
You can easily identify the type of fins on each grille by the initial letter of the model.
Quick Guide to Choosing Your Linear Grille
- Wall type: select models compatible with your installation.
- Frame size: balance aesthetics and ease of installation.
- Air direction: Fins A for direct diffusion; Fins B to direct air to specific zones.
Following these steps will make selecting the right grille much easier. If you have any questions, contact us and we’ll help you choose the perfect model for your project.