Hatches for Bulbs

Air mixing unit with mix-hatches for inside/mix/outside air.

Extension for extraction of air.

Hatches executed in plywood with coating.

Practical situation with mixing hatch.

Info hatch position: 79% open.

Setup page hatches.

Status page hatches.

Construction of wall for underground aeration.


Fan in pressure chamber.

Pressure wall made of plywood and horizontal beams.

Bearing sheet for ax.