Product 25/25
Single length tunnel Use on any straight module from the single to the tripple. Easy assembly with or without side opening. To open side cut tabs with a blade. Total size 12.125 x 5.27 x 3.072
Free STL 3D printable portals are available for download from Sumner at https://www.thingiverse.com/thing:6016377
T Trak Module tunnel