OpenSCAD model for a frame to hold a F7 filter for Atlantic VMC, saving ~30-50€ x 2 per year.
Original filters (2 x G4 + 1 x F7): https://www.atlantic.fr/Ventiler-le-logement/Ventilation-de-tout-le-logement/Filtres-Ventilation-Double-Flux/Filtres-G4-et-F7-pour-VMC-OPTIMOCOSY-HR
To make new filters:
- cut a new piece of F7 fabric
- pin it between the upper and lower parts of the frame
F7 fabric: https://www.amazon.fr/dp/B07GZTCGXG/
Pictures:
To make new filters:
- remove used fabric from original filter
- cut a new piece of G4 fabric
- staple it to the original frame
G4 fabric: https://www.amazon.fr/dp/B073R4HF7N/