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Tunnel extensions: when and how manyUpdated 2 months ago
You need an extension above 36 mm
Each Flappie tunnel extension adds 27 mm of depth. The extensions click together and bridge a thick door or wall.
Without a mounting adapter
| Door or wall thickness | Extensions |
|---|---|
| 14–36 mm | 0 |
| Above 36–77 mm | 1 |
| Above 77–104 mm | 2 |
| Above 104–131 mm | 3 |
| Above 131–158 mm | 4 |
| Above 158–185 mm | 5 |
| Above 185–200 mm | 6 |
With a mounting adapter
The two adapter rings take up 14 mm in total, so the ranges change:
| Total thickness | Extensions |
|---|---|
| 4–26 mm | 0 |
| Above 26–67 mm | 1 |
| Above 67–94 mm | 2 |
| Above 94–121 mm | 3 |
| Above 121–148 mm | 4 |
| Above 148–175 mm | 5 |
| Above 175–200 mm | 6 |
Important
- Use a maximum of six extensions.
- The maximum supported thickness is 200 mm.
- Use original Flappie extensions and the supplied matching screws.
- Add each required extension separately when ordering.
View the Flappie tunnel extension.
Still unsure? Use the chat in the bottom-right corner or email [email protected]. Include a photo and your measurements when asking about installation.