CPC Subgroup
E04D 13/17 Ventilation of roof coverings not otherwise provided for (ventilation of rooms or spaces F24F)
Full Title
Special arrangements or devices in connection with roof coverings; Roof drainage (ventilation tiles E04D1/30; ventilation slabs E04D3/40; internal channels E04F17/00) > Ventilation of roof coverings not otherwise provided for (ventilation of rooms or spaces F24F)
3 direct subcodes
Child Classifications
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