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These two mounts can be used to fasten/mount 100mm ventilations tubes.
Unless you choose to glue the two parts together (not recommended), you will for both models need two SHCS M3x8mm and two M3 hexagon nut.
The “holder model” is just holding the tube. It si a tight fit around a 100mm tube, but the tube can still slide/be-pushed while being hold. The other model can fasten around the tube and will need one 3mm brass insert as well as one SHCS M3x10 or M3x12mm.
See also other 100mm ventilation parts in the collection 100mm Ventilation .
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