Reflective tube channels daylight from a roof-mounted dome into a room with no exterior wall access.
Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.
Roof access for the collector dome, and a vertical run to the ceiling penetration below
No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.