€0.42*
% €0.59* (28.81% saved)
from 50 cm length
one slit,
i.e. a middle bars or a cross: from 2 m length
two slots,
i.e. two middle bars per side or a double double cross:
Depending on the length, the centre pieces either have no slot at all (shorter than 50 cm length), only one slot (from 50 cm length) or 2 slots (from 2m length). Accordingly, further middle pieces should be added so that 2 of them interlock at each slot, forming a cross and thus stabilizing the frame. Matching slots are worked into the wedge frames to anchor the ends of the corresponding centre pieces there.
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