The holes are necessary for micro-ventilation.

[zihadhosenjm40]

The support frame is assembled from 20x30 mm slats.
Using furniture corners and screws, the frame is covered with OSB panels. The side walls should rest on the bottom - this will prevent the body from sagging. The bottom panel is lowered 10 mm from the rest to cover it with glass. This will prevent precipitation from getting inside the frame.
Internal partitions are being installed.
When assembling the body, it is essential to use a construction square, otherwise the structure may turn out lopsided.

The bottom and sides of the hull are insulated with mineral wool and covered with rolled heat-reflecting material.
It is better to use mineral wool with a water-repellent impregnation.

The absorber is placed on the prepared space. To do this, one of the side japan mobile database is dismantled, which is then put back in place.
Scheme of the internal "pie" of the solar collector

At a distance of 1 cm from the upper edge of the box, the inner perimeter of the structure is covered with a 20x30 mm wooden strip so that its wide side touches the walls.
A sealing rubber band is glued around the perimeter.
To ensure a tight seal, use a regular window seal.

They lay glass or a double-glazed window, the outline of which is also covered with window sealant.
The structure is pressed with an aluminum corner, in which holes for screws are pre-drilled. At this stage, the assembly of the manifold is considered complete.
When assembled, the thickness of the solar collector is about 17 cm.