- for foundation in a slope or ground pit
- vestibule depth 50cm
- for mounting a single door
- monolithic, robust construction
- arch-shaped retaining wall in the upper part
- extension of the basement with additional chambers while maintaining watertightness
- foundation of cellar under building, driveway for cars, terrace, gazebo
- electrical installation with fittings
- ventilation system with accessories
- interior finish and door fitting options
- individual customisation