So it can be bigger than the doorway.

A one-piece tank must arrive whole.

Through gates, doors and corridors.

For any real volume that route fails.

Panels arrive flat and stack.

The room, not the route.

Which is the point of the product.

Many cubic metres on a pallet.

Carried in and built in place.

Where a moulded tank could never go.

In panel increments, in all three dimensions.

Long and shallow under a low soffit.

Or tall and narrow into a corner.

Shapes no moulded tank offers.

For a single order.

In the joints, entirely.

Every seam is a potential leak.

Held by a gasket and bolted flanges.

And the count grows with the tank.

Assembly quality is the product.

One with the bolts and flanges inside.

So nothing projects outward.

Used where external access is tight.

It costs internal volume.

And makes assembly harder.

Flat, level and continuously supporting.

The panels rely on staying square.

To keep their seals compressed.

An uneven base racks the tank.

And the seams begin to weep.

With an internal division, yes.

Half is drained and cleaned.

While the building runs on the other half.

Then the two are swapped.

Which matters where nothing can stop.