From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
ricket /ɹˈɪkɪt/
Bewetterungsscheider <masc>, Wetterscheider <masc>, Bewetterungsblende <fem>, Wetterblende <fem>, Wetterdrossel <fem> [min.]
Synonyms: air partition, brattice work, deflector brattice, brattice
see: air partitions, brattice works, deflector brattices, brattices, rickets, shaft partition, shaft brattice, board partition, board brattice, board ricket