I took the original thing and fused the single parts of the mesh in Blender.

Part is available in the original size (support_fraisier_fused_original_60_7mm.stl) and as a shortened version (support_fraisier_fused_30_5mm.stl), both with and without feet (heads).

Both parts are in active use and protect my balcony strawberries from moulding!

Thanks to arnaud rouby for the original design!