4m 1 Ring (C25)

The C25 exists to solve physical constraints that more obvious models cannot. On paper it can look like poorer value than a C28, because the nominal storage is lower relative to the size of the vessel. In practice, that misses the point. The C25 is not a value-engineered alternative to the C28. It is a layout-driven engineering solution for sites where height and roof integration are the dominant constraints.

This is a model that makes sense when real plant conditions matter more than simple volume comparison.

The C25 offers three practical advantages:

• lower overall height
• larger roof area
• better suitability for mounting dust extraction directly on top

Those advantages can make it the correct answer in buildings where the taller geometry of a C28 is difficult to accommodate.

If the site is constrained by height, roof integration, or layout geometry, the C25 often becomes the right option even though it may not look like the best value on a simple cubic-metre comparison. It is chosen because it solves problems the C28 cannot solve cleanly.

The C25 is best treated as a constraint-solving model. Where the site has freedom on height, a different model may offer stronger pure storage value. Where height is the deciding factor, the C25 is often exactly the right choice.