Range of flame-retardant, modular tents (19-29-39-45 m2) supported by a sturdy independently stable frame with cross pieces along the base perimeter which allow the tent to be fi xed to the ground without the use of pegs: it can even be put up on cement ground. Inner tents of diff erent sizes are available to complete these tents and to radically improve the living area and heat insulation in both summer and winter conditions. Blue waterproof fl y-sheet in cotton/modacrylic fl ameretardant fabric (CAT. I). The two vertical ends have doors that are protected by a new vestibule which allows other tents to be joined on using link modules. The sides are sloping with large windows that are equipped with mosquito nets and screens complete with transparent window cover. The Montana PLUS model has two side entrances to join two tents together along the side. The snow fl ap is in PVC-coated, fl ame-retardant polyester fabric. The storm guy-lines are in rope and complete with pegs. Two sleeves in the entrance sides for the passage of wiring and heating pipes. Internal ventilation adjustment thanks to the raisable snow fl ap and to the protected air intake under the entrance porch. Available for all sizes: inner tent complete with fl oor; shade; link module; heating and conditioning systems; lighting system and fl ooring, as described on the following pages.