Ideal for boiler-rooms, coolers, etc. that are located below ground level. Complete with an edge protection grate and fasteners.
In the case of ventilation housing there are unlimited possibilities in the assembly of one element on top of another through the perfected system of level-raisers that are very useful in the case of low basements and allow variable regulation up to ground level. The stepless regulation our level-raisers do not require labor-intensive cutting. The fitting and assembly are place by moving the light well and bolting it at the appropriate height to the wall.