- On the upper part of the frame, open a hatch of 300mm long by 30mm wide. It is at the bottom of the water.
- Fix inside the anti-rodant grill
- Using double-sided tape, center and glue a rectangle of parquet insulation on the underside of the dripstone, which serves as a cover.
- Position 4 screws around the hatch taking care to check that the parquet insulation can be placed in the rectangle formed by the screw legs.
- Drill the drip so that it can fit on the screw legs.
- Put it aside, it will be added at the end of editing.
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