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The sizes shown are the roof cut-out. Start from your cut-out (existing or planned): the table below shows which of our skylights and roof vents fit it.

Also check the roof thickness range on the product page: 25 to 80 mm depending on the model.
| Your cut-out (cm) | Models that fit |
|---|---|
| 28 × 28 | POWER VENT · VANLIFE 28×28 · Roof vent fan LED |
| 32 × 32 | POWER VENT |
| 34 × 34 | Roof vent fan LED |
| 36 × 36 | VANLIFE 36×36 |
| 38.5 × 38.5 | SKYDOME 40×40 |
| 40 × 40 | STYLE 40×40 · VANVENT 3.0 · VANLIFE 40×40 |
| 50 × 50 → 96 × 65 | PANORAMA SLIM 3 LED |
| 50 × 70 | PANORAMA LED |
| Type | What it does |
|---|---|
| Skylight | Daylight and a view, opens for airflow |
| Roof vent | Extracts heat, cooking smells and moisture fast (12V fan) |
Many conversions fit one of each: a skylight over the living area, a vent over the kitchen or shower.
Skylights · glazed
| Model | Cut-out (cm) |
|---|---|
| 40 × 40 | |
| 40 × 40 | |
| 50 × 70 | |
| 50 × 50 → 96 × 65 | |
| 38.5 × 38.5 |
Roof vents · 12V fan
| Model | Cut-out (cm) |
|---|---|
| 40 × 40 | |
| 28 × 28 · 32 × 32 | |
| 28 × 28 | |
| 36 × 36 | |
| 40 × 40 | |
| 28 × 28 · 34 × 34 |
It is an airflow that never fully closes: it keeps the air renewed, it is required for homologation by many approval bodies, and it holds condensation down. Look for the orange tag in the tables above.