4 model

Free

UM2 enclosure

Printables

Free

MonoBlock v3.12 & v3.15 (6MM & 8MM Axis) for Ultimaker 1, 2, 2+, GO, Connect, Extended

Printables

Free

DXU - Dual Extrusion Upgrade for UM2+

Thingiverse

Free

Ultimaker 2 Shroud dual nozzle UM2 upgrade

Thingiverse