HO/OO Scale 3D Printed Tunnel Wall (2-Pieces) Outer Measurements: L x H x W: 105 x ( 4 or 6*) x 100 mm approx. Tunnel measurements: H x W: 83 x 63 mm Can fit over Hornby / Peco / Bachmann / Roco Track Thickness can be increased by 2mm by adding no 3d printed … Continue reading HO/OO Scale 3D Printed Tunnel Wall (2-Pieces)